Rename inputs in README for accessibility action

Updated parameter names and descriptions for clarity.

Author: lindseywild

.github/actions/file/README.md

@@ -6,9 +6,9 @@ Files GitHub issues to track potential accessibility gaps.
 
 ### Inputs
 
-#### `findings`
+#### `findings_file`
 
-**Required** List of potential accessibility gaps, as stringified JSON. For example:
+**Required** Path to a JSON file containing the list of potential accessibility gaps. For example:
 
 ```JS
 '[]'
@@ -22,12 +22,12 @@ Files GitHub issues to track potential accessibility gaps.
 
 **Required** Token with fine-grained permission 'issues: write'.
 
-#### `cached_filings`
+#### `cached_filings_file`
 
-**Optional** Cached filings from previous runs, as stringified JSON. Without this, duplicate issues may be filed. For example: `'[{"findings":[],"issue":{"id":1,"nodeId":"SXNzdWU6MQ==","url":"https://github.com/github/docs/issues/123","title":"Accessibility issue: 1"}}]'`
+**Optional** Path to a JSON file containing cached filings from previous runs. Without this, duplicate issues may be filed. For example: `'[{"findings":[],"issue":{"id":1,"nodeId":"SXNzdWU6MQ==","url":"https://github.com/github/docs/issues/123","title":"Accessibility issue: 1"}}]'`
 
 ### Outputs
 
-#### `filings`
+#### `filings_file`
 
-List of issues filed (and their associated finding(s)), as stringified JSON. For example: `'[{"findings":[],"issue":{"id":1,"nodeId":"SXNzdWU6MQ==","url":"https://github.com/github/docs/issues/123","title":"Accessibility issue: 1"}}]'`
+Path to a JSON file containing the list of issues filed (and their associated finding(s)). For example: `'[{"findings":[],"issue":{"id":1,"nodeId":"SXNzdWU6MQ==","url":"https://github.com/github/docs/issues/123","title":"Accessibility issue: 1"}}]'`