fix: correct pip install syntax for dev and doc extras

[savvar9991]

1. Developer Dependencies Installation:

-pip install -e .'[dev]'
+pip install -e .[dev]

2.Documentation Tools Installation:

-pip install -e .'[doc]'
+pip install -e .[doc]

Reasons for changes:
The old version with quotes and dot (.'[dev]' or .'[doc]') could lead to installation errors as pip would incorrectly interpret the package path
The new version (.[ ]) is the standard pip syntax for specifying additional dependencies (extras)
This format is the widely accepted and documented way to install packages with extra dependencies
These changes make the installation commands correct and ensure their proper execution.

[bitwise-constructs]

Standard syntax is with no space between them

[antazoey]

Note for zsh users, you will still need to include the quotes:

(apedev13) ➜  ape git:(main) pip install -e .[doc]
zsh: no matches found: .[doc]
(apedev13) ➜  ape git:(main) pip install -e .'[doc]'
Obtaining file:///Users/antazoey/PythonProjects/ape
  Installing build dependencies ... done
  ...