Add that avatars can now be removed with the in game button

Change a bit of formatting to the passage and add that the game now has a way to remove individual avatars, Also a warning there's no confirmation dialog.

Author: Toys0125

docs/avatars.mdx

@@ -155,7 +155,7 @@ Load!
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 # Remove Avatars
-By default, Basis will save the details of Avatars added through the game menu for convenience. After a while, this can grow the avatar list or keep old Avatar information, which may not be desirable. To remove this, you can do the following:
+By default, Basis will save the details of Avatars added through the game menu for convenience. Avatars can be removed by clicking on the Avatar in the menu and hitting the Red Delete Avatar button *(Currently no confirmation dialog is shown.)* After a while, this can grow the avatar list or keep old Avatar information, which may not be desirable. To remove all saved avatars, you can do the following:
 
 - Delete `%appdata%\..\LocalLow\Basis Unity\Basis Unity\VerySafePasswordStore.json`.