Fixed typo in gitattributes

'text' was misspelled as 'test'. The impact has been that git
hasn't enforced any particular line-ending style for files
of type .xsd. It will do so now, similar to other text type files.

.gitattributes

@@ -24,7 +24,7 @@
 *.svg             text eol=lf
 *.txt             text eol=lf
 *.xml             text eol=lf
-*.xsd             test eol=lf
+*.xsd             text eol=lf
 
 .gitattributes    text eol=lf
 .gitignore        text eol=lf