Polish some sentences

... wrt to the now even better unit testing.

Author: drwetter

Readme.md

@@ -2,7 +2,7 @@
 ## Intro
 ![GitHub Tag](https://img.shields.io/github/v/tag/testssl/testssl.sh)
 ![Static Badge](https://img.shields.io/badge/%2Fbin%2Fbash_-blue)
-![Static Badge](https://img.shields.io/badge/OpenSSL_-blue)
+![Static Badge](https://img.shields.io/badge/Libre+OpenSSL_-blue)
 [![License](https://img.shields.io/github/license/testssl/testssl.sh)](https://github.com/testssl/testssl.sh/LICENSE)
 ![GitHub Created At](https://img.shields.io/github/created-at/testssl/testssl.sh)
 ![GitHub last commit](https://img.shields.io/github/last-commit/testssl/testssl.sh)
@@ -31,6 +31,7 @@ cryptographic flaws.
 * Privacy: It's only you who sees the result, not a third party.
 * Freedom: It's 100% open source. You can look at the code, see what's going on.
 * The development is free and open @ GitHub and participation is welcome.
+* Unit tests ensure maturity (output is consistent, JSON is valid, runs under Linux+MacOS etc)
 
 ### License
 
@@ -53,7 +54,7 @@ but you can also use any LibreSSL or OpenSSL version.
 (silent) check for binaries is done when you start testssl.sh . System V needs probably
 to have GNU grep installed. Windows (using MSYS2, Cygwin or WSL) work too.
 
-Update notification here or @ [mastodon](https://infosec.exchange/@testssl) or [bluesky](https://bsky.app/profile/testssl.bsky.social). [twitter](https://twitter.com/drwetter) is not being used anymore.
+Update notification can be found here or most important ones @ [mastodon](https://infosec.exchange/@testssl) or [bluesky](https://bsky.app/profile/testssl.bsky.social). [twitter](https://twitter.com/drwetter) is not being used anymore.
 
 ### Installation