docs: fix slight spelling error (#820)

docs/library/tag.md

@@ -32,7 +32,7 @@ Given a tag named "Freddy", we may confuse it with other "Freddy" tags in our li
 
 ![Tag Disambiguation Example](../assets/tag_disambiguation_example.png)
 
-So if the "Five Night's at Fredddy's" tag is added as a parent tag on the "Freddy" tag, and the disambiguation box next to it is checked, then our tag name will automatically be displayed as "Freddy (Five Nights at Freddy's)". Better yet, if the "Five Night's at Fredddy's" tag has a shorthand such as "FNAF", then our "Freddy" tag will be displayed as "Freddy (FNAF)". This process preserves our base tag name ("Freddy") and provides an option to get a clean and consistent method to display disambiguating parent categories, rather than having to type this information in manually for each applicable tag.
+So if the "Five Night's at Freddy's" tag is added as a parent tag on the "Freddy" tag, and the disambiguation box next to it is checked, then our tag name will automatically be displayed as "Freddy (Five Nights at Freddy's)". Better yet, if the "Five Night's at Freddy's" tag has a shorthand such as "FNAF", then our "Freddy" tag will be displayed as "Freddy (FNAF)". This process preserves our base tag name ("Freddy") and provides an option to get a clean and consistent method to display disambiguating parent categories, rather than having to type this information in manually for each applicable tag.
 
 ## Tag Relationships