docs: Update Obsidian docs to remove need for BRAT install

packages/obsidian/README.md

@@ -20,12 +20,6 @@ Please log issues to https://github.com/markdown-confluence/markdown-confluence/
 
 ## Getting Started
 
-## Alternative Installation
-> Due to waiting for https://github.com/obsidianmd/obsidian-releases/pull/1867 to be merged.
-> 
-> If you would like to use the plugin currently you will need to use [Alternative Installation](https://obsidian-confluence.com/getting-started/installation-brat.html) instructions.
-
-
 1. Install the `confluence-integration` plugin from Obsidian's community plugins browser.
 2. Open the plugin settings and configure the following fields: