Adjust "incomplet and incorrekt" joke.

This adjusts it to be closer to the form in the C++ working drafts.

Fixes #1043

CppCoreGuidelines.md

@@ -8,7 +8,7 @@ Editors:
 * [Bjarne Stroustrup](http://www.stroustrup.com)
 * [Herb Sutter](http://herbsutter.com/)
 
-This document is a very early draft. It is inkorrekt, incompleat, and pµÃoorly formatted.
+This document is an early draft. It's known to be incomplet, incorrekt, and has lots of b**a**d **fo**rm~att~ing.
 Had it been an open-source (code) project, this would have been release 0.8.
 Copying, use, modification, and creation of derivative works from this project is licensed under an MIT-style license.
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