[FAB-6206] Fix typos in MSP doc
[FAB-6206] Fix typos in MSP doc

Fix typos and add proper punctuation to the MSP document.

Change-Id: I20a7d04aa543107e932259e285a7df81789104bb
Signed-off-by: Boliang Chen <098bb68b66278ed600ffc04422124757db67c35a@gmail.com>

mqshen/fabric,mqshen/fabric,manish-sethi/fabric-sidedb,muralisrini/fabric,jimthematrix/fabric,xixuejia/fabric,jimthematrix/fabric,lukehuangch/fabric,binhn/fabric,stemlending/fabric,lukehuangch/fabric,mqshen/fabric,manish-sethi/fabric,mqshen/fabric,lukehuangch/fabric,hyperledger/fabric,lukehuangch/fabric,ckeyer/fabric,manish-sethi/fabric,ckeyer/fabric,mqshen/fabric,manish-sethi/fabric-sidedb,stemlending/fabric,lukehuangch/fabric,ckeyer/fabric,stemlending/fabric,mqshen/fabric,manish-sethi/fabric-sidedb,xixuejia/fabric,hyperledger/fabric,binhn/fabric,stemlending/fabric,binhn/fabric,manish-sethi/fabric-sidedb,ckeyer/fabric,muralisrini/fabric,mqshen/fabric,ckeyer/fabric,ckeyer/fabric,lukehuangch/fabric,manish-sethi/fabric-sidedb,xixuejia/fabric,manish-sethi/fabric-sidedb,lukehuangch/fabric,muralisrini/fabric,ckeyer/fabric,manish-sethi/fabric-sidedb