update error message

website/src/components/Result.vue

@@ -27,8 +27,9 @@ const errorsCountFormated = computed(() => {
 
         <b-alert v-if="result.summary.versionUnimplemented" variant="danger" show>
           Sorry, the validator failed to parse this file. Please check that the URL is available and points to a
-          gbfs.json file. If you have any questions, please write to <a href='mailto:[email protected]'
-            target='_blank' rel='noreferrer'>
+          <a href="https://github.com/MobilityData/gbfs/blob/master/gbfs.md#gbfsjson" target='_blank'
+            rel='noreferrer'>gbfs.json</a> file. If you have any questions, please write to <a
+            href='mailto:[email protected]' target='_blank' rel='noreferrer'>
             [email protected]
           </a>. Thank you
         </b-alert>

website/src/pages/Visualization.vue

@@ -479,8 +479,9 @@ provide('map', map)
     <b-row class="mt-3" v-if="summary.versionUnimplemented"><b-col>
         <b-alert variant="danger" show class="mb-0">
           Sorry, the validator failed to parse this file. Please check that the URL is available and points to a
-          gbfs.json file. If you have any questions, please write to <a href='mailto:[email protected]'
-            target='_blank' rel='noreferrer'>
+          <a href="https://github.com/MobilityData/gbfs/blob/master/gbfs.md#gbfsjson" target='_blank'
+            rel='noreferrer'>gbfs.json</a> file. If you have any questions, please write to <a
+            href='mailto:[email protected]' target='_blank' rel='noreferrer'>
             [email protected]
           </a>. Thank you
         </b-alert>