docs: Fix bad image background-color in dark mode

* and properly freeze requirements (failed with latest jinja2)

Author: ukkopahis

docs/Basic_setup/Networking.md

@@ -5,7 +5,9 @@ An easy way to find out your IP is by typing `ip address` in the terminal and lo
 
 Check the docker-compose.yml to see which ports have been used
 
+<div markdown="1" style="background: #FFFC; padding: 0.5em;">
 ![net](https://user-images.githubusercontent.com/46672225/66702353-0bcc4080-ed07-11e9-994b-62219f50b096.png)
+</div>
 
 ## Examples
 - You want to connect your nodered to your mqtt server. In nodered drop an mqtt node, when you need to specify the address type `mosquitto`
@@ -25,4 +27,4 @@ For adminer:
     ports:
       - 9080:8080
 ```
-Port 9080 on Host Pi is mapped to port 8080 of the container. Therefore 127.0.0.1:8080 will take you to openHAB, where 127.0.0.1:9080 will take you to adminer
+Port 9080 on Host Pi is mapped to port 8080 of the container. Therefore 127.0.0.1:8080 will take you to openHAB, where 127.0.0.1:9080 will take you to adminer

mkdocs.yml

@@ -58,3 +58,4 @@ markdown_extensions:
   - pymdownx.superfences
   - toc:
       permalink: true
+  - md_in_html

requirements-mkdocs.txt

@@ -1,3 +1,24 @@
-mkdocs-material
-mkdocs-material-extensions
-mkdocs-redirects
+bracex==2.2.1
+click==8.0.4
+ghp-import==2.0.2
+importlib-metadata==4.11.2
+Jinja2==3.0.3
+Markdown==3.3.6
+MarkupSafe==2.1.0
+mergedeep==1.3.4
+mkdocs==1.2.3
+mkdocs-awesome-pages-plugin==2.7.0
+mkdocs-material==8.2.3
+mkdocs-material-extensions==1.0.3
+mkdocs-redirects==1.0.3
+packaging==21.3
+Pygments==2.11.2
+pymdown-extensions==9.2
+pyparsing==3.0.7
+python-dateutil==2.8.2
+PyYAML==6.0
+pyyaml_env_tag==0.1
+six==1.16.0
+watchdog==2.1.6
+wcmatch==8.3
+zipp==3.7.0