[TE] fix document for adding new application (#5473)
[TE] fix document for adding new application (#5473)

Co-authored-by: Xiaohui Sun <c9e1d72ca7bfb0dc23ce21d3c7c9a070dc2144ee@xhsun-mn1.linkedin.biz>
linkedin/pinot,linkedin/pinot,linkedin/pinot,linkedin/pinot,linkedin/pinot