feat(mkdocs): upgraded mkdocs and mkdocs-material

Dockerfile

@@ -2,7 +2,7 @@ FROM python:3.5
 ENV WEBHOOK_URL_PREFIX="wiki/hooks"
 RUN apt update
 RUN apt install -y unzip apache2
-RUN python -m pip  install mkdocs==0.17.3 mkdocs-material==2.7.3 pygments pymdown-extensions
+RUN python -m pip  install mkdocs==1.0.4 mkdocs-material==3.1.0 pygments pymdown-extensions
 RUN wget -qO- https://github.com/adnanh/webhook/releases/download/2.6.5/webhook-linux-amd64.tar.gz \ 
       | tar xzv --strip 1  -C  /usr/local/bin
 RUN mkdir -p /var/webhook /srv_root/docs