Fix 404 link in azure-sample: 3-WebApp-multi-APIs

[stvansolano]

Purpose

Fix link to 2-1-Call-MSGraph in tutorial

Does this introduce a breaking change?

[ ] Yes
[x] No

Pull Request Type

What kind of change does this Pull Request introduce?

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[x] Documentation content changes
[ ] Other... Please describe:

How to Test

• Get the code
• Navigate to the file
• Check redirect

git clone [repo-address]
cd [repo-name]
git checkout [branch-name]
npm install

What to Check

Verify that the following are valid

• Redirect works

[jmprieur]

Thanks @stvansolano
Much appreciated