Documentation consistency fixes (#84)

* Consistent use of periods

* Consistent casing of GitHub

* Use 2-space indentation for YAML example

* Add links to for further details

README.md

@@ -47,8 +47,8 @@ However note that caching the registries may mean that the registry will not be
 - `cache-compiled` - Whether to cache `~/.julia/compiled/`. Defaults to `true`.
 - `cache-scratchspaces` - Whether to cache `~/.julia/scratchspaces/`. Defaults to `true`.
 - `cache-logs` - Whether to cache `~/.julia/logs/`. Defaults to `true`. Helps auto-`Pkg.gc()` keep the cache small.
-- `delete-old-caches` - Whether to delete old caches for the given key. Defaults to `true`
-- `token` - A github PAT. Defaults to `github.token`. Requires `repo` scope to enable the deletion of old caches.
+- `delete-old-caches` - Whether to delete old caches for the given key. Defaults to `true`.
+- `token` - A [GitHub PAT](https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/managing-your-personal-access-tokens). Defaults to `github.token`. Requires `repo` scope to enable the deletion of old caches.
 
 ### Outputs
 
@@ -82,13 +82,13 @@ This action automatically deletes old caches that match the first 4 fields of th
 - All variables in the `matrix` (unless disabled via `include-matrix: 'false'`)
 - The `runner.os` (may be in the matrix too, but included for safety)
 
-Which means your caches files will not grow needlessly. Github also deletes cache files after
+Which means your caches files will not grow needlessly. GitHub also deletes cache files after
 [90 days which can be increased in private repos to up to 400 days](https://docs.github.com/en/organizations/managing-organization-settings/configuring-the-retention-period-for-github-actions-artifacts-and-logs-in-your-organization)
 
 > [!NOTE]
-> To allow deletion of caches you will likely need to grant the following to the default
-> `GITHUB_TOKEN` by adding this to your yml:
-> ```
+> To allow deletion of caches you will likely need to [grant the following permissions](https://docs.github.com/en/actions/using-jobs/assigning-permissions-to-jobs)
+> to the `GITHUB_TOKEN` by adding this to your GitHub actions workflow:
+> ```yaml
 > permissions:
 >   actions: write
 >   contents: read

action.yml

@@ -11,31 +11,31 @@ inputs:
     description: 'The cache key prefix. Unless disabled the key body automatically includes matrix vars, and the OS. Include any other parameters/details in this prefix to ensure one unique cache key per concurrent job type.'
     default: 'julia-cache-${{ github.workflow }}-${{ github.job }}'
   include-matrix:
-    description: 'Whether to include the matrix values when constructing the cache key'
+    description: 'Whether to include the matrix values when constructing the cache key.'
     default: 'true'
   cache-artifacts:
-    description: 'Whether to cache ~/.julia/artifacts/'
+    description: 'Whether to cache ~/.julia/artifacts/.'
     default: 'true'
   cache-packages:
-    description: 'Whether to cache ~/.julia/packages/'
+    description: 'Whether to cache ~/.julia/packages/.'
     default: 'true'
   cache-registries:
-    description: 'Whether to cache ~/.julia/registries/. This is off by default to ensure CI gets latest versions'
+    description: 'Whether to cache ~/.julia/registries/. This is off by default to ensure CI gets latest versions.'
     default: 'false'
   cache-compiled:
-    description: 'Whether to cache ~/.julia/compiled/'
+    description: 'Whether to cache ~/.julia/compiled/.'
     default: 'true'
   cache-scratchspaces:
-    description: 'Whether to cache ~/.julia/scratchspaces/'
+    description: 'Whether to cache ~/.julia/scratchspaces/.'
     default: 'true'
   cache-logs:
-    description: 'Whether to cache ~/.julia/logs/. This helps automatic Pkg.gc() keep the cache size down'
+    description: 'Whether to cache ~/.julia/logs/. This helps automatic Pkg.gc() keep the cache size down.'
     default: 'true'
   delete-old-caches:
-    description: 'Whether to delete old caches for the given key'
+    description: 'Whether to delete old caches for the given key.'
     default: 'true'
   token:
-    description: 'A github PAT. Requires `repo` scope to enable the deletion of old caches'
+    description: 'A GitHub PAT. Requires `repo` scope to enable the deletion of old caches.'
     default: '${{ github.token }}'
 
 outputs: