Add code example for CA1711 rule (#48951) (#48952)

Author: kurnakovv

docs/fundamentals/code-analysis/quality-rules/ca1711.md

@@ -10,6 +10,8 @@ helpviewer_keywords:
 - IdentifiersShouldNotHaveIncorrectSuffix
 author: gewarren
 ms.author: gewarren
+dev_langs:
+ - CSharp
 ---
 # CA1711: Identifiers should not have incorrect suffix
 
@@ -61,6 +63,21 @@ Naming conventions provide a common look for libraries that target the .NET comm
 
 Remove the suffix from the type name.
 
+## Example
+
+```csharp
+class BadEmployeeCollection { } // Violates CA1711
+
+// Good
+class Employee { }
+class GoodEmployeeCollection : ICollection<Employee>
+{
+    // Implementations
+}
+
+class Employees { } // Good
+```
+
 ## When to suppress warnings
 
 Do not suppress a warning from this rule unless the suffix has an unambiguous meaning in the application domain.