Fix coding style

Fix coding style

./doc/inputmethod_doc.h:35:  [LNE_R_TWS]Line ends in whitespace.  Consider deleting these extra spaces.  [whitespace/end_of_line] [4]
./include/inputmethod_keydef.h:17:  [LNE_R_TWS]Line ends in whitespace.  Consider deleting these extra spaces.  [whitespace/end_of_line] [4]
./include/inputmethod_keydef.h:27:  [LNE_R_TWS]Line ends in whitespace.  Consider deleting these extra spaces.  [whitespace/end_of_line] [4]
./include/inputmethod_keydef.h:33:  [LNE_R_TWS]Line ends in whitespace.  Consider deleting these extra spaces.  [whitespace/end_of_line] [4]
./include/inputmethod_keydef.h:299:  [LNE_R_TWS]Line ends in whitespace.  Consider deleting these extra spaces.  [whitespace/end_of_line] [4]

Change-Id: I10ff8e80f6190e179e821d4bd1abc089cb9be3ef
Signed-off-by: Jihoon Kim <jihoon48.kim@samsung.com>