fix update-snippet

Created via bruno",
Updated via bruno"
does a cool thing",

bruno/CodeSnippets/create_snippet.bru

@@ -12,9 +12,9 @@ post {
 
 body:json {
   {
-    "title": "TEST from Bruno",
+    "title": "Mock snippet sent via Bruno",
     "slug": "bruno-test",
-    "markdown": "this is a test",
-    "tags": ["test"]
+    "markdown": "## MOCK SNIPPET\nCreated via bruno",
+    "tags": ["mock"]
   }
 }