apply suggested changes

Co-authored-by: Sarah <hello@sarahgerrard.me>

Author: mizulu

src/routes/concepts/stores.mdx

@@ -348,7 +348,7 @@ setStore("users", 3, "loggedIn" , (loggedIn) => !loggedIn)
 ### Filtering values
 
 To update elements in an array based on specific conditions, you can pass a function as an argument.
-This function will act as a filter, It receives the old value and index, giving you flexibility to apply logic that targets specific cases.
+This function acts as a filter, receiving the old value and index, and gives you the flexibility to apply logic that targets specific cases.
 This might include using methods like `.startsWith()`, `includes()`, or other comparison techniques to determine which elements should be updated.
 
 ```jsx