Fix formatting issue

Author: joel.tazzari

plugins/user-authenticators/oauth2/src/main/java/org/apache/cloudstack/oauth2/keycloak/KeycloakOAuth2Provider.java

@@ -132,9 +132,9 @@ public String verifyCodeAndFetchEmail(String secretCode) {
                 JsonObject json = JsonParser.parseString(body).getAsJsonObject();
                 JsonElement fetchedIdToken = json.get("id_token");
                 if (fetchedIdToken == null) {
-                	throw new CloudRuntimeException("No id_token found in token");
+                    throw new CloudRuntimeException("No id_token found in token");
                 }
-				String idTokenAsString = fetchedIdToken.getAsString();
+                String idTokenAsString = fetchedIdToken.getAsString();
                 validateIdToken(idTokenAsString , provider);
 
                 this.idToken = idTokenAsString ;