fix CSS width

public/css/gogs.css

@@ -2475,7 +2475,7 @@ footer .container .links > *:first-child {
 }
 .repository.watchers .list .item {
   list-style: none;
-  width: 33%;
+  width: 32%;
   margin: 10px 10px 10px 0;
   padding-bottom: 14px;
   float: left;

public/less/_repository.less

@@ -892,7 +892,7 @@
 
 			.item {
 				list-style: none;
-				width: 33%;
+				width: 32%;
 				margin: 10px 10px 10px 0;
 		    padding-bottom: 14px;
 		    float: left;