Merge pull request #2282 from max-heller/patch-1

Fix typo in guide

Author: ehuss

guide/src/format/mdbook.md

@@ -358,7 +358,7 @@ matter for what they're doing.
 This is a bad thing that you should pay attention to.
 
 Warning blocks should be used sparingly in documentation, to avoid "warning
-fatique," where people are trained to ignore them because they usually don't
+fatigue," where people are trained to ignore them because they usually don't
 matter for what they're doing.
 
 </div>