Updated README.md

README.md

@@ -49,6 +49,7 @@ Search for files matching [glob patterns](https://docs.github.com/en/actions/lea
 |-------------------------------------------|--------|----------|-----------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------|
 |                 base-ref                  | string |  false   |             `"${{ github.base_ref }}"`              |               Specify a base ref used for comparing<br>changes, when `include-deleted-files` is set to `true`<br>                |
 |                 base-sha                  | string |  false   |                                                     |            Specify a base commit SHA used for<br>comparing changes, when `include-deleted-files` is set to<br>`true`             |
+|                   diff                    | string |  false   |                                                     |         Specify a diff string .. or ...<br>used for comparing changes, when `include-deleted-files` is<br>set to `true`          |
 |               escape-paths                | string |  false   |                      `"false"`                      |                               Escape special characters of filenames used in<br>the `paths` output                               |
 |              excluded-files               | string |  false   |                                                     |              Excluded file patterns (optionally include `!` before<br>the file pattern or it would be<br>prepended)              |
 |      excluded-files-from-source-file      | string |  false   |                                                     |                                      Source file to populate the `excluded-files` input<br>                                      |