migrate to LinkButton (#7286)

Author: JustinBeckwith

CONTRIBUTING.md

@@ -81,7 +81,7 @@ Buttons are simply... clickable buttons. They take `href` and `color` as argumen
 ![Button MDX Component](images/mdx-button.png)
 
 ```markdown
-<Button href="https://discord.com/developers/docs/getting-started" color="brand">click the button!</Button>
+<LinkButton to="https://discord.com/developers/docs/getting-started" color="brand">click the button!</LinkButton>
 ```
 
 #### Cards

docs/activities/Building_An_Activity.mdx

@@ -107,7 +107,7 @@ By the end of Step 1, you should have:
 
 With our project set up, let's create our app and configure the Activity. Create a new app in the developer portal if you don't have one already:
 
-<Button href="https://discord.com/developers/applications?new_application=true" color="brand">Create App</Button>
+<LinkButton to="https://discord.com/developers/applications?new_application=true" color="brand">Create App</LinkButton>
 
 Enter a name for your app, select a development team, then press **Create**.
 

docs/quick_start/Getting_Started.mdx

@@ -85,7 +85,7 @@ With that out of the way, open your new project in the code editor of your choic
 
 First, you'll need to create an app in the developer portal if you don't have one already:
 
-<Button href="https://discord.com/developers/applications?new_application=true" color="brand">Create App</Button>
+<LinkButton to="https://discord.com/developers/applications?new_application=true" color="brand">Create App</LinkButton>
 
 Enter a name for your app, then press **Create**.
 

docs/tutorials/Developing_a_User_Installable_App.mdx

@@ -58,7 +58,7 @@ With that out of the way, open your new project in the code editor of your choic
 
 First, you'll need to create an app in the developer portal if you don't have one already:
 
-<Button href="https://discord.com/developers/applications?new_application=true" color="brand">Create App</Button>
+<LinkButton to="https://discord.com/developers/applications?new_application=true" color="brand">Create App</LinkButton>
 
 Enter a name for your app, then press **Create**.