[MM-37772] Idiomatic naming (URL, URI, API) (#18128)

* s/Url/URL/g & s/Uri/URI/g

* s/Api/API/g

api4/remote_cluster.go

@@ -262,7 +262,7 @@ func remoteSetProfileImage(c *Context, w http.ResponseWriter, r *http.Request) {
 
 	user, err := c.App.GetUser(c.Params.UserId)
 	if err != nil || !user.IsRemote() {
-		c.SetInvalidUrlParam("user_id")
+		c.SetInvalidURLParam("user_id")
 		return
 	}
 	auditRec.AddMeta("user", user)