doc: fix ngeat/effects typo (#521)

docs/docs/dev-tools.mdx

@@ -22,7 +22,7 @@ The plugin supports the following options passed as the second function paramete
 
 `preAction` - A method that's called before each action.
 
-`actionsDispatcher` - Observable of actions. For example actions created by [@ngeat/effects](https://github.com/ngneat/effects)
+`actionsDispatcher` - Observable of actions. For example actions created by [@ngneat/effects](https://github.com/ngneat/effects)
 
 `logTrace`: Outputs a console.trace() for each action in the console.
 
@@ -42,7 +42,7 @@ platformBrowserDynamic()
     });
 })
 ```
-## Display actions from [@ngeat/effects](https://github.com/ngneat/effects)
+## Display actions from [@ngneat/effects](https://github.com/ngneat/effects)
 
 ### Angular