Update docs with _td() and some other recommendations
Update docs with _td() and some other recommendations

Signed-off-by: Stefan Parviainen <1c44db95109f1e617f297f1f2e2c9ae3e916b412@iki.fi>

vector-im/vector-web,vector-im/vector-web,vector-im/riot-web,vector-im/riot-web,vector-im/riot-web,martindale/vector,vector-im/vector-web,vector-im/vector-web,martindale/vector,vector-im/vector-web,vector-im/riot-web,vector-im/riot-web,vector-im/riot-web