Change tabs to spaces

Author: pangolp

.gitattributes

@@ -32,16 +32,16 @@
 ## For documentation
 
 # Documents
-*.doc	 diff=astextplain
-*.DOC	 diff=astextplain
+*.doc    diff=astextplain
+*.DOC    diff=astextplain
 *.docx diff=astextplain
 *.DOCX diff=astextplain
 *.dot  diff=astextplain
 *.DOT  diff=astextplain
 *.pdf  diff=astextplain
-*.PDF	 diff=astextplain
-*.rtf	 diff=astextplain
-*.RTF	 diff=astextplain
+*.PDF    diff=astextplain
+*.rtf    diff=astextplain
+*.RTF    diff=astextplain
 
 ## DOCUMENTATION
 *.markdown   text