Coding style: Improve wording (#6787)

docs/coding-style.md

@@ -27,16 +27,16 @@ Static fields and properties should be placed before instance ones.
 
 Static methods are preferred to be after instance methods.
 
-Methods which are called by other methods in the same category should be placed below the callers.
+Once grouped as specified above, methods which are called by other methods in the same group should be placed below the callers.
 
 ```csharp
-public int Bar() => 2;
+public int PublicMethod() => 42;
 
-int CallerOne(int x) => Foo() + x;
+int CallerOne() => Leaf();
 
-int CallerTwo(int x) => Foo() + x + Bar();
+int CallerTwo() => Leaf() + PublicMethod();
 
-int Foo() =>  1; // this is placed at the bottom, as it's a "leaf" method within the same category
+int Leaf() =>  42;
 ```
 
 Local functions should always be placed at the end of a method.