Fix version to say 12 is supported

correct arm versions in docker doc

Author: Dave Conway-Jones

docs/faq/node-versions.md

@@ -7,14 +7,14 @@ slug: node versions
 
 Node-RED currently recommends **Node 10.x LTS**.
 
-Version | Support Level |
---------|---------------|
+Version | Support Level | Notes
+--------|---------------|------
  < 7.x  | *Unsupported* |
- **8.x**  | **Supported** |
+ **8.x**  | **Supported** | going End of Life December 31st 2019
  9.x  | *Unsupported* |
  **10.x**  | **Recommended** |
   11.x  | *Unsupported* |
-  12.x  | Tentative |
+  12.x  | **Supported** |  
 
 
 We try to stay up to date with Node.js releases. Our goal is to support

docs/getting-started/docker.md

@@ -93,7 +93,7 @@ Using Alpine Linux reduces the built image size, but removes standard dependenci
 
 See the [Github project README](https://github.com/node-red/node-red-docker/blob/master/README.md) for detailed Image, Tag and Manifest information.
 
-For example: suppose you are running on a Raspberry PI 3B, which has arm32v7 as architecture. Then just run the following command to pull the image (tagged by `1.0.2-10-arm32v7`), and run the container.
+For example: suppose you are running on a Raspberry PI 3B, which has `arm32v7` as architecture. Then just run the following command to pull the image (tagged by `1.0.2-10-arm32v7`), and run the container.
 ```
 docker run -it -p 1880:1880 --name mynodered nodered/node-red:latest
 ```
@@ -102,7 +102,7 @@ The same command can be used for running on an amd64 system, since Docker discov
 
 This has the advantage that you don't need to know/specify which architecture you are running on and makes docker run commands and docker compose files more flexible and exchangeable across systems.
 
-**Note**: Currently there is a bug in Docker's architecture detection that fails for Arm6 CPU - eg Raspberry Pi Zero or 1. For these devices you currently need to specify the full build label, for example:
+**Note**: Currently there is a bug in Docker's architecture detection that fails for `arm32v6` - eg Raspberry Pi Zero or 1. For these devices you currently need to specify the full image tag, for example:
 ```
 docker run -it -p 1880:1880 --name mynodered nodered/node-red:1.0.2-10-arm32v6
 ```