Some malformed comments were discovered when generating
the official documentation of wlan cfg ini items.
Refine the documentation text of the following items
in one batch:
gEnableDynamicDTIM
g_sap_chanswitch_mode
gVhtChannelWidth
gDataInactivityTimeout
Change-Id: I2b1455d0ea27fd35dc0cf66316c7dc3b348ee0ac
CRs-Fixed: 2416086