chore: change phrasing of Servient test descriptions

Author: JKRhb

test/core/servient_test.dart

@@ -34,8 +34,8 @@ class MockedProtocolClientFactory implements ProtocolClientFactory {
 }
 
 void main() {
-  group("Servient Tests", () {
-    test("Should accept a ProtocolClientFactory list as constructor argument",
+  group("Servient", () {
+    test("should accept a ProtocolClientFactory list as constructor argument",
         () {
       final servient = Servient(
         clientFactories: [
@@ -47,7 +47,7 @@ void main() {
     });
 
     test(
-      "Should allow for adding and removing a ProtocolClientFactory at runtime",
+      "should allow for adding and removing a ProtocolClientFactory at runtime",
       () {
         final servient = Servient()
           ..addClientFactory(MockedProtocolClientFactory());