one more post-deploy fix

tools/travis/travis_push_release.sh

@@ -22,8 +22,8 @@ if [ ! -e "$TAG.zip" ]; then
     cat head.txt rawtable.txt foot.txt > index.html
 
     #create a zip for single-file release and copy the files
-    cp ../../../open62541.c .
-    cp ../../../open62541.h .
+    cp ../../open62541.c .
+    cp ../../open62541.h .
     zip -r "$TAG.zip" open62541.c open62541.h
     rm open62541.c
     rm open62541.h