You already have nextsv.pl marked executable and a proper shebang line, so there is no need to keep the .pl suffix. In line with this, the documentation should probably be updated to instruct usage as ./nextsv or to put the folder on the PATH and call it as simply nextsv.
For this user-facing script, it's generally better not to expose implementation details like the language used to write the program. See https://wiki.debian.org/UpstreamGuide#Language_extensions_in_scripts for more details.
You already have nextsv.pl marked executable and a proper shebang line, so there is no need to keep the
.pl
suffix. In line with this, the documentation should probably be updated to instruct usage as./nextsv
or to put the folder on thePATH
and call it as simplynextsv
.