Update feeding-metrics.html

Fixing graphite-project/graphite-web#1922

Author: deniszh

quick-start-guides/feeding-metrics.html

@@ -52,7 +52,7 @@ <h3>Application metrics with StatsD</h3>
 
       <p>Tracking the performance of your application is a must. Without built-in telemetry, we're left to rely on low-level tracing tools. Thanks to tools like <a href="https://github.com/etsy/statsd">StatsD</a>, we can fire off asynchronous measurements from our apps without concern for blocking behavior or having to instrument our own collection and aggregation mechanisms.</p>
 
-      <p>Etsy released the original StatsD implementation <a href="https://codeascraft.com/2011/02/15/measure-anything-measure-everything/">back in 2011</a> as an open source metrics aggregator. Since then, a huge ecosystem of <a href="(https://github.com/etsy/statsd/wiki#client-implementations">language bindings</a> and <a href="https://github.com/etsy/statsd/wiki#server-implementations">competing server implementations</a> have grown up around it. With a few lines of code, anyone can instrument their application to fire off regular, non-blocking metrics to Graphite.</p>
+      <p>Etsy released the original StatsD implementation <a href="https://codeascraft.com/2011/02/15/measure-anything-measure-everything/">back in 2011</a> as an open source metrics aggregator. Since then, a huge ecosystem of <a href="https://github.com/etsy/statsd/wiki#client-implementations">language bindings</a> and <a href="https://github.com/etsy/statsd/wiki#server-implementations">competing server implementations</a> have grown up around it. With a few lines of code, anyone can instrument their application to fire off regular, non-blocking metrics to Graphite.</p>
 
       <pre>
 gem "statsd-ruby"
@@ -106,4 +106,4 @@ <h2>Install Graphite and Get Started</h2>
         <a class="btn btn--primary" href="https://graphite.readthedocs.io/en/latest/install.html" target="_blank">Install</a>
     </div>    
   </div>
-</div>
+</div>