Fix plural agreement grammar in documentation for DesignForExtension · Issue #5249 · checkstyle/checkstyle · GitHub
![English Grammar Singular Nouns (with 'a' and 'an') www.allthingsgrammar.com/ plural--singular-nouns.html | Grammar worksheets, Nouns worksheet, Singular nouns English Grammar Singular Nouns (with 'a' and 'an') www.allthingsgrammar.com/ plural--singular-nouns.html | Grammar worksheets, Nouns worksheet, Singular nouns](https://i.pinimg.com/originals/21/ae/67/21ae671fcda537f551d40b4de975b5a8.png)
English Grammar Singular Nouns (with 'a' and 'an') www.allthingsgrammar.com/ plural--singular-nouns.html | Grammar worksheets, Nouns worksheet, Singular nouns
![Learning Irregular Plural Noun Worksheet | Irregular plural nouns, Nouns worksheet, Plural nouns worksheet Learning Irregular Plural Noun Worksheet | Irregular plural nouns, Nouns worksheet, Plural nouns worksheet](https://i.pinimg.com/736x/fc/1c/ca/fc1ccac749648a66257477707a7b3072.jpg)