[docs] Fix typo (#2636)

docs/src/docs/hooks/use-local-storage.mdx

@@ -73,9 +73,9 @@ const [value, setValue, removeValue] = useLocalStorage({
 ## Browser tabs synchronization
 
 use-local-storage subscribes to [storage event](https://developer.mozilla.org/en-US/docs/Web/API/Window/storage_event).
-When state changes in one tab it automatically updates value in all other opened browser tabs.
+When state changes in one tab, it automatically updates value in all other opened browser tabs.
 You can test this feature by opening 2 tabs with Mantine docs side by side and changing color scheme
-(button on the top right or `⌘ + J` on mac and `Ctrl + J` on Windows and Linux).
+(button on the top right or `⌘ + J` on MacOS and `Ctrl + J` on Windows and Linux).
 
 ## Serialize/deserialize json
 
@@ -132,10 +132,10 @@ interface UseLocalStorage<T> {
   /** Default value that will be set if value is not found in local storage */
   defaultValue?: T;
 
-  /** If set to true, value will be update is useEffect after mount */
+  /** If set to true, value will be update in useEffect after mount */
   getInitialValueInEffect: boolean;
 
-  /** Function to serialize value into string to be save in local storage */
+  /** Function to serialize value into string to be saved in local storage */
   serialize?(value: T): string;
 
   /** Function to deserialize string value from local storage to value */