Fix spelling errors

docs/contribution-guidelines.md

@@ -6,6 +6,7 @@
     // http://officeopenxml.com/WPdocument.php
     ```
 
+    <!-- cSpell:ignore datypic -->
     It can be a link to `officeopenxml.com` or `datypic.com` etc.
     It could also be a reference to the official ECMA-376 standard: https://www.ecma-international.org/publications-and-standards/standards/ecma-376/
 

src/patcher/traverser.spec.ts

@@ -41,7 +41,6 @@ const MOCK_JSON = {
                 "xmlns:wpi": "http://schemas.microsoft.com/office/word/2010/wordprocessingInk",
                 "xmlns:wne": "http://schemas.microsoft.com/office/word/2006/wordml",
                 "xmlns:wps": "http://schemas.microsoft.com/office/word/2010/wordprocessingShape",
-                "mc:Ignorable": "w14 w15 w16se w16cid w16 w16cex w16sdtdh wp14",
             },
             elements: [
                 {