docs(paramsSerializer config within request config): update documentation for paramsSerializer

Co-authored-by: David Dallas <Davidcobb606@gmail.com>
Co-authored-by: Jay <jasonsaayman@gmail.com>

README.md

@@ -385,11 +385,17 @@ These are the available config options for making requests. Only the `url` is re
     ID: 12345
   },
   
-  // `paramsSerializer` is an optional config in charge of serializing `params`
+  // `paramsSerializer` is an optional config that allows you to customize serializing `params`. 
   paramsSerializer: {
-    encode?: (param: string): string => { /* Do custom ops here and return transformed string */ }, // custom encoder function; sends Key/Values in an iterative fashion
+
-    serialize?: (params: Record<string, any>, options?: ParamsSerializerOptions ), // mimic pre 1.x behavior and send entire params object to a custom serializer func. Allows consumer to control how params are serialized.
+    //Custom encoder function which sends key/value pairs in an iterative fashion.
-    indexes: false // array indexes format (null - no brackets, false (default) - empty brackets, true - brackets with indexes)
+    encode?: (param: string): string => { /* Do custom operations here and return transformed string */ }, 
+    
+    // Custom serializer function for the entire parameter. Allows user to mimic pre 1.x behaviour.
+    serialize?: (params: Record<string, any>, options?: ParamsSerializerOptions ), 
+    
+    //Configuration for formatting array indexes in the params. 
+    indexes: false // Three available options: (1) indexes: null (leads to no brackets), (2) (default) indexes: false (leads to empty brackets), (3) indexes: true (leads to brackets with indexes).    
   },
 
   // `data` is the data to be sent as the request body