Capitalize "Edit" hostname

To match other links, capitalize the first letter of "Edit".

Resolves openbmc/phosphor-webui#25

Change-Id: I6da98358c68223b7a70e5500f3a83a6cd57a5f32
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/app/overview/controllers/system-overview-controller.html b/app/overview/controllers/system-overview-controller.html
index a99775c..ad28811 100644
--- a/app/overview/controllers/system-overview-controller.html
+++ b/app/overview/controllers/system-overview-controller.html
@@ -2,7 +2,7 @@
 <div class="overview">
   <div class="row column">
     <h1 class="inline">{{dataService.hostname}}</h1>
-    <button class="link" ng-click="edit_hostname = !edit_hostname">edit</button><!-- this is default name. Will show custom server name if set -->
+    <button class="link" ng-click="edit_hostname = !edit_hostname">Edit</button><!-- this is default name. Will show custom server name if set -->
   </div>
   <section class="row">
     <div class="column large-8">