Correct various typos in "Create a copilot" instructions

[marknoble]

Module: 00

Lab/Demo: 01

Task: Create a copilot

Step: 02

Description of issue
The word "also" is duplicated in this sentence "You can also also navigate to the Create page for more copilot creation options and the Copilots page to view all of your existing copilots."

Repro steps:
Select this link, then view the error sentence hightlighted in Edge.
https://microsoftlearning.github.io/mslearn-copilotstudio/Instructions/Labs/01-create-copilot.html#:~:text=You%20can%20also%20also%20navigate%20to%20the%20Create%20page%20for%20more%20copilot%20creation%20options%20and%20the%20Copilots%20page%20to%20view%20all%20of%20your%20existing%20copilots.

Also correct misspellings of "approriate" to "appropriate" in steps 10 and 11.