Reworked installation instructions (#1949)

* move plugins

* plugins in main sidebar

* restructure installation guide

* fix some removed references

* more sphinx fixes

* restructured developer installation, more cleanup

* rename some files

* rewrote MacOS installation instructions

* rewrote the windows installation guide

* cleaned up linux installation instructions

* added a lot of colons

Co-authored-by: Jason Villanueva <a@jsonvillanueva.com>

* improve first paragraph of installation.rst

* move docker and jupyter to separate files

* Copyediting

Co-authored-by: Darylgolden <darylgolden@gmail.com>

* change wording regarding colab env

* copyediting, second pass

Co-authored-by: Darylgolden <darylgolden@gmail.com>

* first mention recommended ffmpeg installation for windows

* move admonition above table of contents

Co-authored-by: Jason Villanueva <a@jsonvillanueva.com>
Co-authored-by: Darylgolden <darylgolden@gmail.com>

docs/source/tutorials/using_text.rst

@@ -110,6 +110,8 @@ Weight specifies the boldness of a font. You can see a list of weights in
                 g += Text(weight.name, weight=weight.name, font="Open Sans")
             self.add(g.arrange(DOWN).scale(0.5))
 
+.. _using-colors:
+
 Using Colors
 ------------
 
@@ -165,7 +167,8 @@ be an iterable of any length:
             self.add(t)
 
 You can also use :attr:`~.Text.t2g` for gradients with specific 
-characters of the text. It shares a similar syntax to :ref:`Using Colors`:
+characters of the text. It shares a similar syntax to :ref:`the
+interface for colors <using-colors>`:
 
 .. manim:: t2gExample
     :save_last_frame: