Fix input type in dialog EditText

It should be textCapSentences instaed of textCapWords,
textCapWords will make it cap after any space or symbol.
It will cause inconvenience when user want to rename type.

Fix: 122083369
Test: atest DocumentsUITests
Change-Id: Ic48399c9127d233ccec5bc23d1ed504efbfdf310
1 file changed