Add PyPI and NPM packages to release template (#148)

## What is the goal of this PR?

Releases now include information about our PyPI and NPM packages.

## What are the changes implemented in this PR?

Given that we deploy not just to Maven, but also to PyPI and NPM, it seems prudent to document all 3 (or none of them!)

Author: alexjpwalker

RELEASE_TEMPLATE.md

@@ -1,10 +1,10 @@
-Documentation: http://docs.vaticle.com/docs/client-api/java
+Documentation: https://docs.vaticle.com/docs/client-api/
 
 ### Distribution
 
 #### For Java through Maven
 
-Available through https://repo.vaticle.com
+Available from https://repo.vaticle.com
 ```xml
 <repositories>
     <repository>
@@ -21,4 +21,24 @@ Available through https://repo.vaticle.com
 </dependencies>
 ```
 
+#### For Python through PyPI
+
+Available from https://pypi.org/project/typedb-protocol/
+
+```sh
+pip install typedb-protocol
+```
+
+#### For Node.js through npm
+
+Available from https://www.npmjs.com/package/typedb-protocol
+
+```sh
+npm install typedb-protocol
+```
+or
+```sh
+yarn install typedb-protocol
+```
+
 { release notes }