doc: improve options documentation

README.md

@@ -100,7 +100,9 @@ You will also likely need to add the following `.gitattributes` file to ensure t
 
 ## Options
 
-`version`: (required) The version of golangci-lint to use.
+### `version`
+
+(required) The version of golangci-lint to use.
 * When `install-mode` is `binary` (default) the value can be v1.2 or v1.2.3 or `latest` to use the latest version.
 * When `install-mode` is `goinstall` the value can be v1.2.3, `latest`, or the hash of a commit.
 
@@ -111,7 +113,9 @@ with:
   # ...
 ```
 
-`install-mode`: (optional) The mode to install golangci-lint.
+### `install-mode`
+
+(optional) The mode to install golangci-lint.
 It can be `binary` or `goinstall`.
 The default value is `binary`.
 
@@ -122,7 +126,9 @@ with:
   # ...
 ```
 
-`only-new-issues`: (optional) Show only new issues.
+### `only-new-issues`
+
+(optional) Show only new issues.
 If you are using `merge_group` event (merge queue) you should add the option `fetch-depth: 0` to `actions/checkout` step.
 The default value is `false`.
 
@@ -133,7 +139,9 @@ with:
   # ...
 ```
 
-`working-directory`: (optional) working directory, useful for monorepos.
+### `working-directory`
+
+(optional) working directory, useful for monorepos.
 
 ```yml
 uses: golangci/golangci-lint-action@v5
@@ -142,7 +150,9 @@ with:
   # ...
 ```
 
-`skip-cache`: (optional) If set to `true`, then all caching functionality will be completely disabled,
+### `skip-cache`
+
+(optional) If set to `true`, then all caching functionality will be completely disabled,
 takes precedence over all other caching options.
 The default value is `false`.
 
@@ -153,7 +163,9 @@ with:
   # ...
 ```
 
-`skip-save-cache`: (optional) If set to `true`, caches will not be saved, but they may still be restored, required `skip-cache: false`.
+### `skip-save-cache`
+
+(optional) If set to `true`, caches will not be saved, but they may still be restored, required `skip-cache: false`.
 The default value is `false`.
 
 ```yml
@@ -163,7 +175,9 @@ with:
   # ...
 ```
 
-`annotations`: (optional) To enable/disable GitHub Action annotations.
+### `annotations`
+
+(optional) To enable/disable GitHub Action annotations.
 If disabled (`false`), the output format(s) will follow the golangci-lint configuration file and use the same default as golangci-lint (i.e. `colored-line-number`).
 https://golangci-lint.run/usage/configuration/#output-configuration
 The default value is `true`.
@@ -175,7 +189,9 @@ with:
   # ...
 ```
 
-`args`: (optional) golangci-lint command line arguments.
+### `args`
+
+(optional) golangci-lint command line arguments.
 Note: By default, the `.golangci.yml` file should be at the root of the repository.
 The location of the configuration file can be changed by using `--config=`