docs: Add inline docs (#11992)

## Description

Closes: #XXXX



---

### Author Checklist

*All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow up issues.*

I have...

- [ ] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] added `!` to the type prefix if API or client breaking change
- [ ] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/main/CONTRIBUTING.md#pr-targeting))
- [ ] provided a link to the relevant issue or specification
- [ ] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/main/docs/building-modules)
- [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/main/CONTRIBUTING.md#testing)
- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [ ] updated the relevant documentation or specification
- [ ] reviewed "Files changed" and left comments if necessary
- [ ] confirmed all CI checks have passed

### Reviewers Checklist

*All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.*

I have...

- [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] confirmed `!` in the type prefix if API or client breaking change
- [ ] confirmed all author checklist items have been addressed 
- [ ] reviewed state machine logic
- [ ] reviewed API design and naming
- [ ] reviewed documentation is accurate
- [ ] reviewed tests and test coverage
- [ ] manually tested (if applicable)

x/authz/client/cli/query.go

@@ -95,6 +95,7 @@ $ %s query %s grants cosmos1skjw.. cosmos1skjwj.. %s
  return cmd
 }
 
+// GetQueryGranterGrants returns cmd to query for all grants for a granter.
 func GetQueryGranterGrants() *cobra.Command {
  cmd := &cobra.Command{
  Use: "granter-grants [granter-addr]",
@@ -143,6 +144,7 @@ $ %s q %s granter-grants cosmos1skj..
  return cmd
 }
 
+// GetQueryGranteeGrants returns cmd to query for all grants for a grantee.
 func GetQueryGranteeGrants() *cobra.Command {
  cmd := &cobra.Command{
  Use: "grantee-grants [grantee-addr]",

x/authz/client/cli/tx.go

@@ -51,6 +51,7 @@ func GetTxCmd() *cobra.Command {
  return AuthorizationTxCmd
 }
 
+// NewCmdGrantAuthorization returns a CLI command handler for creating a MsgGrant transaction.
 func NewCmdGrantAuthorization() *cobra.Command {
  cmd := &cobra.Command{
  Use: "grant <grantee> <authorization_type=\"send\"|\"generic\"|\"delegate\"|\"unbond\"|\"redelegate\"> --from <granter>",
@@ -199,6 +200,7 @@ func getExpireTime(cmd *cobra.Command) (*time.Time, error) {
  return &e, nil
 }
 
+// NewCmdRevokeAuthorization returns a CLI command handler for creating a MsgRevoke transaction.
 func NewCmdRevokeAuthorization() *cobra.Command {
  cmd := &cobra.Command{
  Use: "revoke [grantee] [msg-type-url] --from=[granter]",
@@ -232,6 +234,7 @@ Example:
  return cmd
 }
 
+// NewCmdExecAuthorization returns a CLI command handler for creating a MsgExec transaction.
 func NewCmdExecAuthorization() *cobra.Command {
  cmd := &cobra.Command{
  Use: "exec [tx-json-file] --from [grantee]",

x/distribution/client/cli/tx.go

@@ -74,6 +74,7 @@ func newSplitAndApply(
  return nil
 }
 
+// NewWithdrawRewardsCmd returns a CLI command handler for creating a MsgWithdrawDelegatorReward transaction.
 func NewWithdrawRewardsCmd() *cobra.Command {
  bech32PrefixValAddr := sdk.GetConfig().GetBech32ValidatorAddrPrefix()
 
@@ -119,6 +120,7 @@ $ %s tx distribution withdraw-rewards %s1gghjut3ccd8ay0zduzj64hwre2fxs9ldmqhffj
  return cmd
 }
 
+// NewWithdrawAllRewardsCmd returns a CLI command handler for creating a MsgWithdrawDelegatorReward transaction.
 func NewWithdrawAllRewardsCmd() *cobra.Command {
  cmd := &cobra.Command{
  Use: "withdraw-all-rewards",
@@ -182,6 +184,7 @@ $ %[1]s tx distribution withdraw-all-rewards --from mykey
  return cmd
 }
 
+// NewSetWithdrawAddrCmd returns a CLI command handler for creating a MsgSetWithdrawAddress transaction.
 func NewSetWithdrawAddrCmd() *cobra.Command {
  bech32PrefixAccAddr := sdk.GetConfig().GetBech32AccountAddrPrefix()
 
@@ -220,6 +223,7 @@ $ %s tx distribution set-withdraw-addr %s1gghjut3ccd8ay0zduzj64hwre2fxs9ld75ru9p
  return cmd
 }
 
+// NewFundCommunityPoolCmd returns a CLI command handler for creating a MsgFundCommunityPool transaction.
 func NewFundCommunityPoolCmd() *cobra.Command {
  cmd := &cobra.Command{
  Use: "fund-community-pool [amount]",

x/slashing/client/cli/tx.go

@@ -24,6 +24,7 @@ func NewTxCmd() *cobra.Command {
  return slashingTxCmd
 }
 
+// NewUnjailTxCmd returns a CLI command handler for creating a MsgUnjail transaction.
 func NewUnjailTxCmd() *cobra.Command {
  cmd := &cobra.Command{
  Use: "unjail",

x/staking/client/cli/tx.go

@@ -51,6 +51,7 @@ func NewTxCmd() *cobra.Command {
  return stakingTxCmd
 }
 
+// NewCreateValidatorCmd returns a CLI command handler for creating a MsgCreateValidator transaction.
 func NewCreateValidatorCmd() *cobra.Command {
  cmd := &cobra.Command{
  Use: "create-validator",
@@ -90,6 +91,7 @@ func NewCreateValidatorCmd() *cobra.Command {
  return cmd
 }
 
+// NewEditValidatorCmd returns a CLI command handler for creating a MsgEditValidator transaction.
 func NewEditValidatorCmd() *cobra.Command {
  cmd := &cobra.Command{
  Use: "edit-validator",
@@ -145,6 +147,7 @@ func NewEditValidatorCmd() *cobra.Command {
  return cmd
 }
 
+// NewDelegateCmd returns a CLI command handler for creating a MsgDelegate transaction.
 func NewDelegateCmd() *cobra.Command {
  bech32PrefixValAddr := sdk.GetConfig().GetBech32ValidatorAddrPrefix()
 
@@ -188,6 +191,7 @@ $ %s tx staking delegate %s1l2rsakp388kuv9k8qzq6lrm9taddae7fpx59wm 1000stake --f
  return cmd
 }
 
+// NewRedelegateCmd returns a CLI command handler for creating a MsgBeginRedelegate transaction.
 func NewRedelegateCmd() *cobra.Command {
  bech32PrefixValAddr := sdk.GetConfig().GetBech32ValidatorAddrPrefix()
 
@@ -236,6 +240,7 @@ $ %s tx staking redelegate %s1gghjut3ccd8ay0zduzj64hwre2fxs9ldmqhffj %s1l2rsakp3
  return cmd
 }
 
+// NewUnbondCmd returns a CLI command handler for creating a MsgUndelegate transaction.
 func NewUnbondCmd() *cobra.Command {
  bech32PrefixValAddr := sdk.GetConfig().GetBech32ValidatorAddrPrefix()
 
@@ -279,6 +284,7 @@ $ %s tx staking unbond %s1gghjut3ccd8ay0zduzj64hwre2fxs9ldmqhffj 100stake --from
  return cmd
 }
 
+// NewCancelUnbondingDelegation returns a CLI command handler for creating a MsgCancelUnbondingDelegation transaction.
 func NewCancelUnbondingDelegation() *cobra.Command {
  bech32PrefixValAddr := sdk.GetConfig().GetBech32ValidatorAddrPrefix()