fix city matching expression

Author: circa10a

mcbroken/data_source_cities_test.go

@@ -9,7 +9,7 @@ import (
 
 func TestAccMcbrokenCities(t *testing.T) {
 	brokenNumberRegex, _ := regexp.Compile(`\d{1,3}.\d{1,2}`)
-	cityRegex, _ := regexp.Compile(`\w`)
+	cityRegex, _ := regexp.Compile(`[a-zA-Z]+$`)
 	resource.ParallelTest(t, resource.TestCase{
 		PreCheck:          func() { /* no precheck needed testAccPreCheck(t) */ },
 		ProviderFactories: testAccProviderFactories,