fix: drop default value for base input

Author: hasundue

README.md

@@ -29,8 +29,8 @@ and passed through to it.
 | Name              | Description                                                                                                              | Default                                                                                                     |
 | ----------------- | ------------------------------------------------------------------------------------------------------------------------ | ----------------------------------------------------------------------------------------------------------- |
 | `author`          | Author of the pull request in the format of `Display Name <email@adress.com>`.                                           | `${{ github.actor }} <${{ github.actor_id }}+${{ github.actor }}@users.noreply.github.com>`                 |
-| `base`            | Base branch for the pull request.                                                                                        | `${{ github.ref }}`                                                                                         |
-| `branch`          | Head branch for the pull request.                                                                                        | `molt-action`                                                                                               |
+| `base`            | Base branch to create the pull request against.                                                                          | The branch checked out in the workflow                                                                      |
+| `branch`          | Head branch to create the pull request from.                                                                             | `molt-action`                                                                                               |
 | `commit`          | Whether to commit changes locally.                                                                                       | `true`                                                                                                      |
 | `commit-prefix`   | Prefix for commit messages.                                                                                              | `chore:`                                                                                                    |
 | `committer`       | Name of the committer in the format of `Display Name <email@address.com>`                                                | `github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>`                               |

action.yml

@@ -14,8 +14,9 @@ inputs:
     default: ${{ github.actor }} <${{ github.actor_id }}+${{ github.actor }}@users.noreply.github.com>
 
   base:
-    description: Base branch for the pull request.
-    default: ${{ github.ref }}
+    description: >
+      Base branch to create the pull request against. Defaults to the branch
+      checked out in the workflow.
 
   branch:
     description: Head branch for the pull request.