do not touch /// in first lines

[maxandersen]

issue is that in many shells you can use triple slashes ///, i.e. ///usr/bin/env jbang "$0" "$@" ; exit $? as a trick to be compatible with both shell scripts and java code.

JDK javadoc linter had this issue too and is now fixed in https://bugs.openjdk.org/browse/JDK-8341907

would be great if google-java-format could honor the same.

[vorburger]

@maxandersen as mentioned on #1217 (comment), this issue seems like it may be an exact duplicate of previously raised #1215 about the same, do you want to close this one?