Add missing author tags to doc blocks

Author: Mike England

functions/gravityForms/getGfFieldId.js

@@ -1,7 +1,8 @@
 /**
  * Create a field ID based on GravityForms provided ID.
  *
- * @param {number}  fieldId GravityForm field ID.
+ * @author WebDevStudios
+ * @param {number} fieldId GravityForm field ID.
  * @return {string} A unique string identifer for the field.
  */
 export default function getGfFieldId(fieldId) {

functions/gravityForms/getHiddenClassName.js

@@ -1,7 +1,8 @@
 /**
  * Determine hidden className.
  *
- * @param {string}  visibility setting of GravityForm field.
+ * @author WebDevStudios
+ * @param {string} visibility setting of GravityForm field.
  * @return {string} Classname selector based on visibility.
  */
 export default function getGfHiddenClassName(visibility) {