JSON Lint the web-hooks.md file

Thanks to @jojosch for the initial work on the web-hooks.html.haml file!

doc/web_hooks/web_hooks.md

@@ -25,7 +25,7 @@ Triggered when you push to the repository except pushing tags.
     "name": "Diaspora",
     "url": "git@localhost:diaspora.git",
     "description": "",
-    "homepage": "http://localhost/diaspora",
+    "homepage": "http://localhost/diaspora"
   },
   "commits": [
     {
@@ -35,10 +35,9 @@ Triggered when you push to the repository except pushing tags.
       "url": "http://localhost/diaspora/commits/b6568db1bc1dcd7f8b4d5a946b0b91f9dacd7327",
       "author": {
         "name": "Jordi Mallach",
-        "email": "jordi@softcatala.org",
+        "email": "jordi@softcatala.org"
       }
     },
-    // ...
     {
       "id": "da1560886d4f094c3e6c9ef40349f7d38b5d27d7",
       "message": "fixed readme",
@@ -46,12 +45,12 @@ Triggered when you push to the repository except pushing tags.
       "url": "http://localhost/diaspora/commits/da1560886d4f094c3e6c9ef40349f7d38b5d27d7",
       "author": {
         "name": "GitLab dev user",
-        "email": "gitlabdev@dv6700.(none)",
-      },
-    },
+        "email": "gitlabdev@dv6700.(none)"
+      }
+    }
   ],
-  "total_commits_count": 4,
-};
+  "total_commits_count": 4
+}
 ```
 #### Issues events