Update 'gitattributes'

remove lfs filter in subdir

.gitattributes → gitattributes

@@ -17,3 +17,5 @@
 *.ofx filter=lfs diff=lfs merge=lfs -text
 *.pdf filter=lfs diff=lfs merge=lfs -text
 *.nfp filter=lfs diff=lfs merge=lfs -text
+
+doc/*.* -filter=lfs -diff=lfs -merge=lfs -text