Update cheatsheets

tldr/linux/locate

@@ -10,11 +10,15 @@ source: https://github.com/tldr-pages/tldr.git
 
 - Look for pattern in the database. Note: The database is recomputed periodically (usually weekly or daily):
 
-`locate {{pattern}}`
+`locate "{{pattern}}"`
+
+- Look for a pattern case-insensitively:
+
+`locate {{[-i|--ignore-case]}} "{{pattern}}"`
 
 - Look for a file by its exact filename (a pattern containing no globbing characters is interpreted as `*pattern*`):
 
-`locate '*/{{filename}}'`
+`locate "*/{{filename}}"`
 
 - Recompute the database. You need to do it if you want to find recently added files: