improved the sentence to make it clear for entering admin in both the username and password (#76141)
* improved the sentence to make it clear for entering admin in both the username and password
* Update docs/sources/getting-started/build-first-dashboard.md
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Co-authored-by: Christopher Moyer <35463610+chri2547@users.noreply.github.com>
(cherry picked from commit 186a9c2331)
Co-authored-by: Bilal Khan <64713734+ibilalkayy@users.noreply.github.com>