Update: Plugins Page

[dericksozo]

There are several changes that can be made to the Plugins section to make it more clear and readable.

First, the introductory sections of both the How To Use Plugins page and the Plugin Development Overview page need to be rewritten for clarity.

Second, the Plugin Development Overview page should include links to other important plugin development documentation, such as events reference and architecture. This will make it easier for developers to find the information they need.

Next, the list of plugins, in the How To Use Plugins page, should be moved to its own page titled "Official Plugins" or "Available Plugins."

Some sentences need to be rewritten to more clearly explain where developers can find plugins list in the dashboard.

[dericksozo]

CC @GreenMachine01

[dericksozo]

This issue is taken care of in #393.