docs: fix typo (#1281)

Author: lazzzis

packages/pinia/src/mapHelpers.ts

@@ -59,7 +59,7 @@ export let mapStoreSuffix = 'Store'
 /**
  * Changes the suffix added by `mapStores()`. Can be set to an empty string.
  * Defaults to `"Store"`. Make sure to extend the MapStoresCustomization
- * interface if you need are using TypeScript.
+ * interface if you are using TypeScript.
  *
  * @param suffix - new suffix
  */

packages/pinia/src/store.ts

@@ -239,7 +239,7 @@ function createSetupStore<
   let debuggerEvents: DebuggerEvent[] | DebuggerEvent
   const initialState = pinia.state.value[$id] as UnwrapRef<S> | undefined
 
-  // avoid setting the state for option stores are it is set
+  // avoid setting the state for option stores if it is set
   // by the setup
   if (!isOptionsStore && !initialState && (!__DEV__ || !hot)) {
     /* istanbul ignore if */
@@ -304,7 +304,7 @@ function createSetupStore<
   const $reset = __DEV__
     ? () => {
         throw new Error(
-          `🍍: Store "${$id}" is build using the setup syntax and does not implement $reset().`
+          `🍍: Store "${$id}" is built using the setup syntax and does not implement $reset().`
         )
       }
     : noop

packages/pinia/src/types.ts

@@ -361,7 +361,7 @@ export interface _StoreWithState<
 
   /**
    * Setups a callback to be called whenever the state changes. It also returns a function to remove the callback. Note
-   * than when calling `store.$subscribe()` inside of a component, it will be automatically cleaned up when the
+   * that when calling `store.$subscribe()` inside of a component, it will be automatically cleaned up when the
    * component gets unmounted unless `detached` is set to true.
    *
    * @param callback - callback passed to the watcher