docs: Add indent for items in list

Some markdown renderers require it to be able to render the list
correctly.

docs/api/browser-window.md

@@ -102,7 +102,6 @@ Default is `false`.
     scripts run in the page. This script will always have access to node APIs
     no matter whether node integration is turned on or off. The value should
     be the absolute file path to the script.
-
     When node integration is turned off, the preload script can reintroduce
     Node global symbols back to the global scope. See example
     [here](process.md#event-loaded).

docs/api/web-contents.md

@@ -349,7 +349,7 @@ this limitation.
 
 ### `webContents.setAudioMuted(muted)`
 
-+ `muted` Boolean
+* `muted` Boolean
 
 Mute the audio on the current web page.