Display 0 as escaped (#3025)

* Display 0 as escaped

* Addressed feedback

Author: tmpreston

xml/System.Windows.Forms/TextBox.xml

@@ -858,7 +858,7 @@
       </ReturnValue>
       <Docs>
         <summary>Gets or sets the character used to mask characters of a password in a single-line <see cref="T:System.Windows.Forms.TextBox" /> control.</summary>
-        <value>The character used to mask characters entered in a single-line <see cref="T:System.Windows.Forms.TextBox" /> control. Set the value of this property to 0 (character value) if you do not want the control to mask characters as they are typed. Equals 0 (character value) by default.</value>
+        <value>The character used to mask characters entered in a single-line <see cref="T:System.Windows.Forms.TextBox" /> control. Set the value of this property to '0' (U+0000) if you do not want the control to mask characters as they are typed. The default value is '0' (U+0000).</value>
         <remarks>
           <format type="text/markdown"><![CDATA[