Fix some unescaped characters in the documentation of CodeDocument::setNewLineCharacters() and ::getNewLineCharacters()

modules/juce_gui_extra/code_editor/juce_CodeDocument.h

@@ -250,13 +250,13 @@ public:
 
     //==============================================================================
     /** Returns the preferred new-line characters for the document.
-        This will be either "\n", "\r\n", or (rarely) "\r".
+        This will be either "\\n", "\\r\\n", or (rarely) "\\r".
         @see setNewLineCharacters
     */
     String getNewLineCharacters() const noexcept          { return newLineChars; }
 
     /** Sets the new-line characters that the document should use.
-        The string must be either "\n", "\r\n", or (rarely) "\r".
+        The string must be either "\\n", "\\r\\n", or (rarely) "\\r".
         @see getNewLineCharacters
     */
     void setNewLineCharacters (const String& newLineCharacters) noexcept;