Setting up Git: Change Step 2.4's Mention of "Password" to "Passphrase"

[ZackHoang]

Because

Step 2.4 of this lesson talks about how the terminal will asks user for a passphrase to secure their SSH key. Currently, the lesson uses the word password rather than passphrase and passphrase is the term that is used instead when the prompt appears. This PR only changes any mention password to passphrase in step 2.4 and not anywhere else in this lesson.

This PR

• Changes step 2.4's mention of password to passphrase

Issue

Closes #30914

Additional Information

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