Fixup message content in mergify config

Author: HoloRin

.github/mergify.yml

@@ -32,7 +32,7 @@ pull_request_rules:
         - -head~=mergify/bp/
     actions:
       comment:
-        message: This pull request modifies the erlang.mk build only. Should the makefiles be updated as well @{{author}}?
+        message: This pull request modifies the erlang.mk build only. Should the bazel build be updated as well @{{author}}?
   - name: Automatically backport to v3.10.x based on label
     conditions:
       - base=master