Test and update C tutorial part 3

Signed-off-by: C-D-Lewis <[email protected]>

Author: C-D-Lewis

source/_includes/guides/owm-api-key-notice.html

@@ -17,5 +17,5 @@
 <div class="alert alert--bg-purple alert--fg-white">
   <b>API KEY REQUIRED</b>
   <p>As of October 2015, an API key is required to fetch OpenWeatherMap data. 
-    These can be freely obtained from <a href="http://openweathermap.org/appid">OpenWeatherMap.org</a>.</p>
+    These can be freely obtained from <a href="https://openweathermap.org">OpenWeatherMap.org</a>.</p>
 </div>

source/tutorials/watchface-tutorial/part2.md

@@ -53,9 +53,8 @@ done, you should end up with a watchface looking like this:
 ## First Steps
 
 To continue from the last part, you can either modify your existing Pebble
-project or create a new one, using the code from that project's main `.c` file
-as a starting template. For reference, that should look
-[something like this](https://gist.github.com/pebble-gists/9b9d50b990d742a3ae34).
+project or create a new one, using the code from the end of the last tutorial
+as a starting point. Don't forget also to include changes to `package.json`.
 
 The result of the first part should look something like this - a basic time
 display: