Escape double curly brackets in code blocks

[markpatterson27]

Double curly brackets {{ }} in code blocks need to be escaped to prevent Jykell from trying to process them as liquid tags.

For example, the YAML code snippet in Lab 6, Exercise 1, Task 2, step 18

Solution:
Place <!-- {% raw %}) --> and <!-- {% endraw %}) --> around code snippets with {{ }} .
See jekyll/jekyll#6217 (comment)

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Changes proposed in this pull request:

• Place <!-- {% raw %}) --> and <!-- {% endraw %}) --> around code snippets with {{ }} .
• Put YAML snippet inside corresponding Note block

[markpatterson27]

I'm not sure if the YAML snippet is better inside the Note block or if it should be left outside it.

[MOC-Labs-Review]

MOC labs Review confirms this pull request.

[LuizMacedo]

Thank you, @markpatterson27. I think it's good inside the Note.