Update the comments in function headers to follow Doxygen special documentation blocks in section 2.3.5.

Signed-off-by: Shumin Qiu <shumin.qiu@intel.com>
Reviewed-by: Jaben Carsey <Jaben.carsey@intel.com>

git-svn-id: svn://svn.code.sf.net/p/edk2/code/trunk/edk2/ShellPkg@15163 6f19259b-4bc3-4df7-8a09-765794883524
Update prints of variable attributes from 'RS' to 'RT' for 'Dmpstore' command.

Signed-off-by: Shumin Qiu <shumin.qiu@intel.com>
Reviewed-by: Jaben Carsey <Jaben.carsey@intel.com>

git-svn-id: svn://svn.code.sf.net/p/edk2/code/trunk/edk2/ShellPkg@15164 6f19259b-4bc3-4df7-8a09-765794883524