`uppy.io/docs` - fix typos/broken links (#5296)

* `https://uppy.io/docs/dragdrop` is a broken link

* `angular.mdx` - typo

* `angular.mdx` - another typo

docs/framework-integrations/angular.mdx

@@ -11,7 +11,7 @@ import TabItem from '@theme/TabItem';
 
 ## When should I use it?
 
-When you are using the Angular framework and you wouldl like to use on of the UI
+When you are using the Angular framework and you would like to use one of the UI
 components.
 
 ## Install

packages/@uppy/drag-drop/README.md

@@ -9,8 +9,7 @@
 
 Droppable zone UI for Uppy. Drag and drop files into it to upload.
 
-**[Read the docs](https://uppy.io/docs/dragdrop)** |
-**[Try it](https://uppy.io/examples/dragdrop/)**
+**[Read the docs](https://uppy.io/docs/drag-drop/)**
 
 Uppy is being developed by the folks at [Transloadit](https://transloadit.com),
 a versatile file encoding service.
@@ -41,7 +40,7 @@ Transloadit’s CDN: Edgly. In that case `Uppy` will attach itself to the global
 ## Documentation
 
 Documentation for this plugin can be found on the
-[Uppy website](https://uppy.io/docs/dragdrop).
+[Uppy website](https://uppy.io/docs/drag-drop/).
 
 ## License