fix typo in action

Author: Neradoc

.github/workflows/build-board-custom.yml

@@ -125,4 +125,4 @@ jobs:
       uses: actions/upload-artifact@v4
       with:
         name: ${{ inputs.board }}-${{ inputs.language }}-${{ inputs.version }}${{ inputs.flags != '' && '-custom' || '' }}${{ inputs.debug && '-debug' || '' }}
-        path: ports/${{ input.port }}/build-${{ inputs.board }}/firmware.*
+        path: ports/${{ inputs.port }}/build-${{ inputs.board }}/firmware.*