Fixed bunch of broken links (#471)

* fixed local links to documentation in README.md

* fixed links to core package

examples/core-example-advanced/src/components/TitleLinks.tsx

@@ -5,7 +5,7 @@ import styled from 'stitches.config'
 export function TitleLinks() {
   return (
     <TitleLinksContainer>
-      <a href="https://github.com/tldraw/core">@tldraw/core</a>
+      <a href="https://github.com/tldraw/tldraw/tree/main/packages/core">@tldraw/core</a>
     </TitleLinksContainer>
   )
 }

guides/documentation.md

@@ -101,7 +101,7 @@ function App() {
 }
 ```
 
-**Tip:** The pages and pageStates in tldraw are objects containing `TLPage` and `TLPageState` objects from the [@tldraw/core](https://github.com/tldraw/core) library.
+**Tip:** The pages and pageStates in tldraw are objects containing `TLPage` and `TLPageState` objects from the [@tldraw/core](/packages/core) library.
 
 **Tip:** The `assets` in tldraw is a table of `TDAssets` (images and videos).
 

packages/tldraw/README.md

@@ -76,11 +76,11 @@ function App() {
 }
 ```
 
-Internally, the `<Tldraw/>` component's user interface uses this API to make changes to the component's state. See the `tldrawApp` section of the [documentation](packages/tldraw/guides/documentation.md) for more on this API.
+Internally, the `<Tldraw/>` component's user interface uses this API to make changes to the component's state. See the `tldrawApp` section of the [documentation](/guides/documentation.md) for more on this API.
 
 ### Responding to Changes
 
-You can respond to changes and user actions using the `onChange` callback. For more specific changes, you can also use the `onPatch`, `onCommand`, or `onPersist` callbacks. See the [documentation](packages/tldraw/guides/documentation.md) for more.
+You can respond to changes and user actions using the `onChange` callback. For more specific changes, you can also use the `onPatch`, `onCommand`, or `onPersist` callbacks. See the [documentation](/guides/documentation.md) for more.
 
 ```tsx
 import { Tldraw, TldrawApp } from '@tldraw/tldraw'
@@ -96,7 +96,7 @@ function App() {
 
 ## Documentation
 
-See the project's [documentation](packages/tldraw/guides/documentation.md).
+See the project's [documentation](/guides/documentation.md).
 
 ## Contribution
 
@@ -104,7 +104,7 @@ See the [contributing guide](/CONTRIBUTING.md).
 
 ## Development
 
-See the [development guide](packages/tldraw/guides/development.md).
+See the [development guide](/guides/development.md).
 
 ## Example