Update to Go version

According to https://github.com/dgrijalva/jwt-go/blob/master/hmac.go HS384 & HS512 are supported, and according to https://github.com/dgrijalva/jwt-go/blob/master/rsa.go, RS384 & RS512 are also supported.

Author: Luc Stepniewski

html/index.html

@@ -531,11 +531,11 @@ <h3 class="panel-title">Go</h3>
               <div class="col-md-6">
 
                 <div><i class="icon-budicon-500"></i>HS256</div>
-                <div><i class="icon-budicon-501"></i>HS384</div>
-                <div><i class="icon-budicon-501"></i>HS512</div>
+                <div><i class="icon-budicon-500"></i>HS384</div>
+                <div><i class="icon-budicon-500"></i>HS512</div>
                 <div><i class="icon-budicon-500"></i>RS256</div>
-                <div><i class="icon-budicon-501"></i>RS384</div>
-                <div><i class="icon-budicon-501"></i>RS512</div>
+                <div><i class="icon-budicon-500"></i>RS384</div>
+                <div><i class="icon-budicon-500"></i>RS512</div>
                 <div><i class="icon-budicon-501"></i>ES256</div>
                 <div><i class="icon-budicon-501"></i>ES384</div>
                 <div><i class="icon-budicon-501"></i>ES512</div>