fix(curriculum): hyphenate auto-placed items in CSS Grid review (freeCodeCamp#64799)

Author: subhankarkr

curriculum/challenges/english/blocks/review-css-grid/671a99394bedfb9a5bc687c4.md

@@ -30,7 +30,7 @@ dashedName: review-css-grid
 ```
 
 - **`grid-template-rows`**: This is used to set lines names and sizing for the grid track rows.
-- **`grid-auto-flow`**: This determines how auto placed items fit in the grid.
+- **`grid-auto-flow`**: This determines how auto-placed items fit in the grid.
 
 ```css
 .container {