pad enough for bench-dist-query

[faithokamoto]

Changelog Entry

To be copied to the draft changelog by merger:

• No more overlap in vg help output

Description

They say a picture is worth a thousand words. Here is from vg help on the master branch:

developer commands:
  -- bench-dist-quebenchmark distance query speed across multiple indexes

And on this branch:

developer commands:
  -- bench-dist-query  benchmark distance query speed across multiple indexes

I didn't bother adding a check for this because I really doubt we're going to need a longer command name.