Fix default value in DOC comment

Author: satano

docs/data/classes/reference.tools.exportworkitemmappingtool.yaml

@@ -46,7 +46,7 @@ options:
 - parameterName: TargetFile
   type: String
   description: Path to file, where work item mapping will be saved.
-  defaultValue: String.Empty
+  defaultValue: ''
   isRequired: false
   dotNetType: System.String, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e
 status: missing XML code comments

docs/static/schema/configuration.schema.json

@@ -1748,8 +1748,7 @@
                 },
                 "TargetFile": {
                   "description": "Path to file, where work item mapping will be saved.",
-                  "type": "string",
-                  "default": "String.Empty"
+                  "type": "string"
                 }
               }
             },

docs/static/schema/schema.tools.exportworkitemmappingtool.json

@@ -17,8 +17,7 @@
     },
     "TargetFile": {
       "description": "Path to file, where work item mapping will be saved.",
-      "type": "string",
-      "default": "String.Empty"
+      "type": "string"
     }
   }
 }

src/MigrationTools/Tools/ExportWorkItemMappingToolOptions.cs

@@ -10,7 +10,7 @@ public class ExportWorkItemMappingToolOptions : ToolOptions
     /// <summary>
     /// Path to file, where work item mapping will be saved.
     /// </summary>
-    /// <default>String.Empty</default>
+    /// <default></default>
     public string TargetFile { get; set; } = string.Empty;
 
     /// <summary>