version 1.0.1 ready for review

[gikf]

• Fixes regex in step 950.1 and 970.1 - not allowing code like if (( NUMBER <= 15 )) without adding $ before the variable name.
• Fixes small mistake in the test description in step 990.1: elif -> else

Checklist:

• I have read freeCodeCamp's contribution guidelines.
• My pull request has a descriptive title (not a vague title like Update index.md)

[moT01]

Note to self: This doesn't have the changes from #2 - it shouldn't cause any problems.

[moT01]

Thanks for the work on this @gikf 🎉 v1.0.1 is now being used 👍