Convert any mention of master to main in repos we maintain (#169)

.azure-pipelines/main.yml

@@ -46,4 +46,4 @@ schedules:
   always: true # Run even when there are no code changes
   branches:
     include:
-    - master
+    - main

README.md

@@ -2,7 +2,7 @@
 
 <!-- region exclude-from-marketplace -->
 
-[![Version](https://vsmarketplacebadge.apphb.com/version/ms-azuretools.vscode-azurevirtualmachines.svg)](https://marketplace.visualstudio.com/items?itemName=ms-azuretools.vscode-azurevirtualmachines) [![Installs](https://vsmarketplacebadge.apphb.com/installs-short/ms-azuretools.vscode-azurevirtualmachines.svg)](https://marketplace.visualstudio.com/items?itemName=ms-azuretools.vscode-azurevirtualmachines) [![Build Status](https://dev.azure.com/ms-azuretools/AzCode/_apis/build/status/vscode-azurevirtualmachines)](https://dev.azure.com/ms-azuretools/AzCode/_build/latest?definitionId=24) [![GitHub](https://img.shields.io/github/license/mashape/apistatus.svg)](https://github.com/Microsoft/vscode-azurevirtualmachines/blob/master/LICENSE.md)
+[![Version](https://vsmarketplacebadge.apphb.com/version/ms-azuretools.vscode-azurevirtualmachines.svg)](https://marketplace.visualstudio.com/items?itemName=ms-azuretools.vscode-azurevirtualmachines) [![Installs](https://vsmarketplacebadge.apphb.com/installs-short/ms-azuretools.vscode-azurevirtualmachines.svg)](https://marketplace.visualstudio.com/items?itemName=ms-azuretools.vscode-azurevirtualmachines) [![Build Status](https://dev.azure.com/ms-azuretools/AzCode/_apis/build/status/vscode-azurevirtualmachines)](https://dev.azure.com/ms-azuretools/AzCode/_build/latest?definitionId=24) [![GitHub](https://img.shields.io/github/license/mashape/apistatus.svg)](https://github.com/Microsoft/vscode-azurevirtualmachines/blob/main/LICENSE.md)
 
 <!-- endregion exclude-from-marketplace -->
 

package.json

@@ -17,7 +17,7 @@
         "color": "#3a3d41",
         "theme": "dark"
     },
-    "homepage": "https://github.com/Microsoft/vscode-azurevirtualmachines/blob/master/README.md",
+    "homepage": "https://github.com/Microsoft/vscode-azurevirtualmachines/blob/main/README.md",
     "license": "SEE LICENSE IN LICENSE.md",
     "categories": [
         "Azure"