Merge pull request #9 from Haschtl/dependabot/pip/docs/twisted-19.7.0

Bump twisted from 18.9.0 to 19.7.0 in /docs

Author: Haschtl

docs/requirements.txt

@@ -203,7 +203,7 @@ tornado==5.0.2
 tqdm==4.28.1
 traitlets==4.3.2
 twine==1.12.1
-Twisted==18.9.0
+Twisted==19.7.0
 urllib3==1.25.3
 verboselogs==1.7
 virtualenv==16.0.0