Improve meek's description in the glossary
A translator [pointed](https://hosted.weblate.org/translate/tor/new-support-portal/en/?checksum=fc4ef87740ceea3f
) out (thanks @Himmel!):
```
"These [pluggable transports](#pluggable-transports) all make it look
like you are browsing a major web site instead of using
[Tor](#tor-network-core-tor)."
Since Meek is one of the Pluggable Transports, I think this statement
is not accurate as a description of Meek.
https://support.torproject.org/glossary/#meek
```
I agree and think we can rephrase this bit better.
cc @emmapeel
issue