[docs] fix typo (sveltejs#7323)

Author: sudongyuer

CONTRIBUTING.md

@@ -67,7 +67,7 @@ Working on your first Pull Request? You can learn how from this free video serie
 
 If you would like to request a new feature or enhancement but are not yet thinking about opening a pull request, you can also file an issue with [feature template](https://github.com/sveltejs/svelte/issues/new?template=feature_request.md).
 
-If you're only fixing a bug, it's fine to submit a pull request right away but we still recommend that you file an issue detailing what you're fixing. This is helpful in case we don't accept that specific fix but want to keep track of the issue.
+If you're only fixing a bug, it's fine to submit a pull request right away, but we still recommend that you file an issue detailing what you're fixing. This is helpful in case we don't accept that specific fix but want to keep track of the issue.
 
 ### Sending a pull request
 

src/runtime/action/index.ts

@@ -3,18 +3,18 @@
  * - update: An action can have a parameter. This method will be called whenever that parameter changes,
  *   immediately after Svelte has applied updates to the markup.
  * - destroy: Method that is called after the element is unmounted
- * 
+ *
  * Example usage:
  * ```ts
- * export function myAction(node: HTMLElement, paramater: Parameter): ActionReturn<Parameter> {
+ * export function myAction(node: HTMLElement, parameter: Parameter): ActionReturn<Parameter> {
  *   // ...
  *   return {
  *     update: (updatedParameter) => {...},
  *     destroy: () => {...}
  *   };
  * }
  * ```
- * 
+ *
  * Docs: https://svelte.dev/docs#template-syntax-element-directives-use-action
  */
 export interface ActionReturn<Parameter = any> {
@@ -34,7 +34,7 @@ export interface ActionReturn<Parameter = any> {
  * ```
  * You can return an object with methods `update` and `destroy` from the function.
  * See interface `ActionReturn` for more details.
- * 
+ *
  * Docs: https://svelte.dev/docs#template-syntax-element-directives-use-action
  */
 export interface Action<Element = HTMLElement, Parameter = any> {