drop-pacman-package: give the runs a more helpful title

This not only clarifies that the package is _uninstalled_, but also
mentions _which_ package.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Author: dscho

.github/workflows/drop-pacman-package.yml

@@ -1,4 +1,5 @@
-name: Drop Pacman package from SDKs
+name: Drop (uninstall) Pacman package from SDKs
+run-name: Drop (uninstall) Pacman package ${{ inputs.package }} from SDKs
 
 on:
   workflow_dispatch: