Set a valid SPDX license expression in package.json
Set a valid SPDX license expression in package.json

Signed-off-by: Thanos Lefteris <c1aaafefa5e5eb338a07115696c553c656221d9f@gmail.com>

matrix-org/matrix-js-sdk,matrix-org/matrix-js-sdk,krombel/matrix-js-sdk,williamboman/matrix-js-sdk,williamboman/matrix-js-sdk,matrix-org/matrix-js-sdk,krombel/matrix-js-sdk,williamboman/matrix-js-sdk,matrix-org/matrix-js-sdk,krombel/matrix-js-sdk