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

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

* s/Api/API/g

api4/upload_test.go

@@ -320,7 +320,7 @@ func TestUploadDataMultipart(t *testing.T) {
 	t.Run("success", func(t *testing.T) {
 		mpData, contentType := genMultipartData(t, data)
 
-		req, err := http.NewRequest("POST", th.Client.ApiUrl+"/uploads/"+us.Id, mpData)
+		req, err := http.NewRequest("POST", th.Client.APIURL+"/uploads/"+us.Id, mpData)
 		require.NoError(t, err)
 		req.Header.Set("Content-Type", contentType)
 		req.Header.Set(model.HeaderAuth, th.Client.AuthType+" "+th.Client.AuthToken)
@@ -344,7 +344,7 @@ func TestUploadDataMultipart(t *testing.T) {
 		require.NotNil(t, u)
 		require.NotEmpty(t, u)
 
-		req, err := http.NewRequest("POST", th.Client.ApiUrl+"/uploads/"+u.Id, mpData)
+		req, err := http.NewRequest("POST", th.Client.APIURL+"/uploads/"+u.Id, mpData)
 		require.NoError(t, err)
 		req.Header.Set("Content-Type", contentType)
 		req.Header.Set(model.HeaderAuth, th.Client.AuthType+" "+th.Client.AuthToken)
@@ -355,7 +355,7 @@ func TestUploadDataMultipart(t *testing.T) {
 
 		mpData, contentType = genMultipartData(t, data[5*1024*1024:])
 
-		req, err = http.NewRequest("POST", th.Client.ApiUrl+"/uploads/"+u.Id, mpData)
+		req, err = http.NewRequest("POST", th.Client.APIURL+"/uploads/"+u.Id, mpData)
 		require.NoError(t, err)
 		req.Header.Set("Content-Type", contentType)
 		req.Header.Set(model.HeaderAuth, th.Client.AuthType+" "+th.Client.AuthToken)