fix: Add spacing between list elements

docs/help/ffmpeg.md

@@ -5,9 +5,13 @@ FFmpeg is required for thumbnail previews and playback features on audio and vid
 Pre-built binaries from trusted sources are available on the [FFmpeg website](https://www.ffmpeg.org/download.html#build-windows).
 
 To install:
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 1. Download 7z or zip file and extract it (right click > Extract All)
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 2. Move extracted contents to a unique folder (i.e; `c:\ffmpeg` or `c:\Program Files\ffmpeg`)
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 3. Add FFmpeg to your PATH 
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     1. Go to "Edit the system environment variables"
     2. Under "User Variables", select "Path" then edit
     3. Click new and add `<Your folder>\bin` (e.g; `c:\ffmpeg\bin` or `c:\Program Files\ffmpeg\bin`)