Fixed a bunch of warnings

FoodsharingSiegen.Server/Data/AuditHelper.cs

@@ -1,9 +1,19 @@
-using FoodsharingSiegen.Contracts.Entity;
+using FoodsharingSiegen.Contracts.Entity;
 
 namespace FoodsharingSiegen.Server.Data
 {
+    /// <summary>
+    ///     The audit helper class (a. beging, 31.05.2022)
+    /// </summary>
     public static class AuditHelper
     {
+        #region Public Method CreateText
+
+        /// <summary>
+        ///     Creates the text using the specified audit (a. beging, 31.05.2022)
+        /// </summary>
+        /// <param name="audit">The audit</param>
+        /// <returns>The string</returns>
         public static string CreateText(Audit audit)
         {
             switch (audit.Type)
@@ -28,13 +38,12 @@ namespace FoodsharingSiegen.Server.Data
                     return $"hat dem Neuling {audit.Data1} folgendes hinzugefügt: {audit.Data2}";
                 case AuditType.RemoveInteraction:
                     return $"hat eine Interaktion bei {audit.Data1} gelöscht.";
-                    break;
                 case AuditType.None:
                 default:
                     return $"{audit.Data1}, {audit.Data2}";
             }
-
-            return string.Empty;
         }
+
+        #endregion
     }
 }