Update workflows

Author: peter-evans

.github/workflows/hello-world-command.yml

@@ -1,7 +1,7 @@
 name: Hello World Command
 on:
   repository_dispatch:
-    types: [hello-world-command]
+    types: [hello-world-local-command]
 jobs:
   helloWorld:
     runs-on: ubuntu-latest

.github/workflows/ping-command.yml

@@ -1,7 +1,7 @@
 name: Ping Command
 on:
   repository_dispatch:
-    types: [ping-command]
+    types: [ping-local-command]
 jobs:
   helloWorld:
     runs-on: ubuntu-latest

.github/workflows/slash-command-dispatch.yml

@@ -41,6 +41,13 @@ jobs:
                 "issue_type": "issue",
                 "repository": "peter-evans/slash-command-dispatch-processor"
               },
+              {
+                "command": "hello-world",
+                "permission": "none",
+                "issue_type": "pull-request",
+                "repository": "peter-evans/slash-command-dispatch-processor",
+                "event_type_suffix": "-pr-command"
+              },
               {
                 "command": "ping",
                 "permission": "none",