making messages in update_javadocs.sh script consistent

Author: pwittchen

update_javadocs.sh

@@ -18,7 +18,7 @@ git checkout gh-pages
 rm -rf javadoc/RxJava1.x/*
 cp -avr library/build/docs/javadoc/* ./javadoc/RxJava1.x
 git add -A
-git commit -m "updating javadocs for RxJava1.x"
+git commit -m "updating JavaDoc for RxJava1.x"
 echo "javadocs for RxJava1.x updated"
 
 echo "javadocs for both RxJava1.x and RxJava2.x updated - now you can push your changes"