Add Parameter details and edge cases of storelookup API

[Shreyaakothari]

https://discord.com/channels/919820544684212225/1041689790795501598/threads/1237262180492247111

When passing the lat/long in the store lookup APIs if no stores are visible it can be due to the defined distance parameter in the request. to resolve this distance parameter can be removed and sortby parameter can be used

Need to add the following parameter details and edgecases

Key Parameters and Edge Cases:
distance (in miles): Defines the search radius. If no stores are within the radius, no results are returned.
point (lat,long): The central point for distance-based queries. The API sorts results by distance automatically.
sortBy: Not needed for distance sorting; omit it when using point.
fieldsToSelect: Allows limiting response fields, but only works when point is not used.
Edge Cases:
Ensure that stores have valid geolocation data.
Narrow distances (e.g., 50m) may result in no results if stores are outside the range.
Sorting by distance is automatic when using point.