Include embed titles in all tags (#2419)

* Add title and remove heading

+ also changed any mentioning of `!tags` command

* Fixed yaml scan errors

+ using tabs instead of spaces

+ enclosed title in `comparison.md` with quotes

* Implement ChrisLovering reviews

+ changed all "Name1 vs. Name2" to "Name1 vs. name2"

+ changed "python discord" to "Python Discord" in titles

+ fix typos

+ reverting hunk for `dotenv.md`

+ changed all title cases to sentence cases

* fix grammar

+ changed "embed" to "embeds"

* remove other ot channels mentioned except ot2

* Fix mistakenly removing a blank line

Should I be using is or ==?

To check if two objects are equal, use the equality operator (==).

x = 5
if x == 5:
    print("x equals 5")
if x == 3:
    print("x equals 3")
# Prints 'x equals 5'

To check if two objects are actually the same thing in memory, use the identity comparison operator (is).

>>> list_1 = [1, 2, 3]
>>> list_2 = [1, 2, 3]
>>> if list_1 is [1, 2, 3]:
...    print("list_1 is list_2")
...
>>> reference_to_list_1 = list_1
>>> if list_1 is reference_to_list_1:
...    print("list_1 is reference_to_list_1")
...
list_1 is reference_to_list_1