Update proposals/2134-identity-hash-lookup.md
Update proposals/2134-identity-hash-lookup.md

Co-Authored-By: David Baker <eda96780433ab82fed17bc3dde59af0f23baeb6a@users.noreply.github.com>
matrix-org/matrix-doc,matrix-org/matrix-doc,matrix-org/matrix-doc,matrix-org/matrix-doc