docs(plugins/core): fix output_action description (lowlighter#1225)

Author: ttytm

.github/readme/partials/documentation/setup/action.md

@@ -22,7 +22,7 @@ From the `Developer settings` of your account settings, select `Personal access
 
 No scopes are required, but additional one may be required depending on which features will be used. Each plugin documentation enumerates which scopes are required to make it work.
 
-A a general rule, the following scopes may be required:
+As a general rule, the following scopes may be required:
 - `public_repo` for some plugins
 - `read:org` for all organizations related metrics
 - `repo` for all private repositories related metrics

source/plugins/core/README.md

@@ -241,7 +241,7 @@ Or more granulary [at job or workflow level](https://docs.github.com/en/actions/
 
 ### Using commits (default)
 
-Use `config_output: commit` to make the action directly push changes to `committer_branch` with a commit.
+Use `output_action: commit` to make the action directly push changes to `committer_branch` with a commit.
 A custom commit message can be used through `committer_message`.
 
 > 💡 *metrics* will automatically ignore push events with a commit message containing `[Skip GitHub Action]` or `Auto-generated metrics for run #` to avoid infinite loops. Note that by default, GitHub already ignore events pushed by `${{ github.token }}` or containing `[skip ci]` in commit message
@@ -261,7 +261,7 @@ metrics:
 
 ### Using pull requests
 
-Use `config_output: pull-request` to make the action open a new pull request and push changes from the same run on it.
+Use `output_action: pull-request` to make the action open a new pull request and push changes from the same run on it.
 
 The last step should use either `pull-request-merge`, `pull-request-squash` or `pull-request-rebase` to merge changes to `committer_branch`.
 
@@ -287,7 +287,7 @@ metrics:
 
 ### Using gists
 
-Use `config_output: gist` to push output to a [GitHub gist](https://gist.github.com) instead.
+Use `output_action: gist` to push output to a [GitHub gist](https://gist.github.com) instead.
 It is required to provide a gist id to `committer_gist` option to make it work.
 
 > 💡 This feature will use `token` instead of `committer_token` to push changes, so `gists` scope must be granted to the original `token` first
@@ -304,7 +304,7 @@ metrics:
 
 ### Manual handling
 
-Use `config_output: none` to perform custom processing with outputs.
+Use `output_action: none` to perform custom processing with outputs.
 They will be available under `/metrics_renders/{filename}` in the runner.
 
 *Example: generate outputs and manually push them*