[docs] Clarify the exact `BSD` license of dependencies (#3197)

Authored by: MrRawes

README.md

@@ -265,15 +265,15 @@ While all the other dependencies are optional, `ffmpeg` and `ffprobe` are highly
 
 * [**ffmpeg** and **ffprobe**](https://www.ffmpeg.org) - Required for [merging separate video and audio files](#format-selection) as well as for various [post-processing](#post-processing-options) tasks. License [depends on the build](https://www.ffmpeg.org/legal.html)
 * [**mutagen**](https://github.com/quodlibet/mutagen)\* - For embedding thumbnail in certain formats. Licensed under [GPLv2+](https://github.com/quodlibet/mutagen/blob/master/COPYING)
-* [**pycryptodomex**](https://github.com/Legrandin/pycryptodome)\* - For decrypting AES-128 HLS streams and various other data. Licensed under [BSD2](https://github.com/Legrandin/pycryptodome/blob/master/LICENSE.rst)
-* [**websockets**](https://github.com/aaugustin/websockets)\* - For downloading over websocket. Licensed under [BSD3](https://github.com/aaugustin/websockets/blob/main/LICENSE)
-* [**secretstorage**](https://github.com/mitya57/secretstorage)\* - For accessing the Gnome keyring while decrypting cookies of Chromium-based browsers on Linux. Licensed under [BSD](https://github.com/mitya57/secretstorage/blob/master/LICENSE)
+* [**pycryptodomex**](https://github.com/Legrandin/pycryptodome)\* - For decrypting AES-128 HLS streams and various other data. Licensed under [BSD-2-Clause](https://github.com/Legrandin/pycryptodome/blob/master/LICENSE.rst)
+* [**websockets**](https://github.com/aaugustin/websockets)\* - For downloading over websocket. Licensed under [BSD-3-Clause](https://github.com/aaugustin/websockets/blob/main/LICENSE)
+* [**secretstorage**](https://github.com/mitya57/secretstorage)\* - For accessing the Gnome keyring while decrypting cookies of Chromium-based browsers on Linux. Licensed under [BSD-3-Clause](https://github.com/mitya57/secretstorage/blob/master/LICENSE)
 * [**brotli**](https://github.com/google/brotli)\* or [**brotlicffi**](https://github.com/python-hyper/brotlicffi) - [Brotli](https://en.wikipedia.org/wiki/Brotli) content encoding support. Both licensed under MIT <sup>[1](https://github.com/google/brotli/blob/master/LICENSE) [2](https://github.com/python-hyper/brotlicffi/blob/master/LICENSE) </sup>
 * [**certifi**](https://github.com/certifi/python-certifi)\* - Provides Mozilla's root certificate bundle. Licensed under [MPLv2](https://github.com/certifi/python-certifi/blob/master/LICENSE)
 * [**AtomicParsley**](https://github.com/wez/atomicparsley) - For embedding thumbnail in mp4/m4a if mutagen/ffmpeg cannot. Licensed under [GPLv2+](https://github.com/wez/atomicparsley/blob/master/COPYING)
 * [**rtmpdump**](http://rtmpdump.mplayerhq.hu) - For downloading `rtmp` streams. ffmpeg will be used as a fallback. Licensed under [GPLv2+](http://rtmpdump.mplayerhq.hu)
 * [**mplayer**](http://mplayerhq.hu/design7/info.html) or [**mpv**](https://mpv.io) - For downloading `rstp` streams. ffmpeg will be used as a fallback. Licensed under [GPLv2+](https://github.com/mpv-player/mpv/blob/master/Copyright)
-* [**phantomjs**](https://github.com/ariya/phantomjs) - Used in extractors where javascript needs to be run. Licensed under [BSD3](https://github.com/ariya/phantomjs/blob/master/LICENSE.BSD)
+* [**phantomjs**](https://github.com/ariya/phantomjs) - Used in extractors where javascript needs to be run. Licensed under [BSD-3-Clause](https://github.com/ariya/phantomjs/blob/master/LICENSE.BSD)
 * [**sponskrub**](https://github.com/faissaloo/SponSkrub) - For using the now **deprecated** [sponskrub options](#sponskrub-options). Licensed under [GPLv3+](https://github.com/faissaloo/SponSkrub/blob/master/LICENCE.md)
 * Any external downloader that you want to use with `--downloader`