woodpecker: use upstream naming for cli executable

The intended executable name is supposed to be `woodpecker`, not
`woodpecker-cli`, as pointed out in [1].

[1]: https://github.com/woodpecker-ci/woodpecker/issues/2112

pkgs/development/tools/continuous-integration/woodpecker/cli.nix

@@ -12,6 +12,6 @@ buildGoModule {
 
   meta = common.meta // {
     description = "Command line client for the Woodpecker Continuous Integration server";
-    mainProgram = "woodpecker-cli";
+    mainProgram = "woodpecker";
   };
 }

pkgs/development/tools/continuous-integration/woodpecker/common.nix

@@ -17,7 +17,11 @@ in
   postInstall = ''
     cd $out/bin
     for f in *; do
+      if [ "$f" = cli ]; then
+        mv -- "$f" "woodpecker"
+      else
         mv -- "$f" "woodpecker-$f"
+      fi
     done
     cd -
   '';