Typos and correctness fixes for creds-init CLI doc

Quick patch to address documentation errors.

Thanks @MemorySpring for the initial change, I'm just carrying this forward.

This closes and supercedes #1238

cmd/creds-init/README.md

@@ -14,10 +14,10 @@ git credential [`.git-credentials`]() file (with `-basic-git` flag).
 
 ### `-ssh-git`
 
-This uses the `ssh-privatekey` and `know_hosts` keys of the secret to generate:
+This uses the `ssh-privatekey` and `known_hosts` keys of the secret to generate:
 - a `~/.ssh/id_{secret}` private key
 - a `~/.ssh/config` file
-- a `~/.ssh/known hosts`
+- a `~/.ssh/known_hosts`
 
 With a `Secret` that looks like:
 
@@ -46,7 +46,7 @@ The flag `-ssh-git=ssh-key=github.com` (with the environment variable
  Port 22
  ```
 - `~/.ssh/id_rsa` with the content of `ssh-privatekey` decoded
-- `~/.ssh/known_hosts` with the content of `ssh-privatekey` decoded
+- `~/.ssh/known_hosts` with the content of `known_hosts` decoded
 
 
 ### `-basic-git`
@@ -143,7 +143,7 @@ This uses the `config.json` key from a secret of type
 `kubernetes.io/dockerconfigjson` to populate the generated docker's
 `config.json` file.
 
-### `-dokcer-cfg`
+### `-docker-cfg`
 
 This uses the `.dockercfg` key from a secret of type
 `kubernetes.io/dockercfg` to populate the generated docker's