Remove trailing space from opl node search egrep examples

[SomeoneElseOSM]

A trailing space makes sense for most opl line elements but not for the node list of ways, since that doesn't have a trailing space before the linefeed.

Testing:

ajtown@dell5000:~/temp$ egrep '^w' rutland-latest.osm.opl | egrep 'N(n[0-9]+),.*\1 ' | wc
      0       0       0

(before change)

ajtown@dell5000:~/temp$ egrep '^w' rutland-latest.osm.opl | egrep 'N(n[0-9]+),.*\1' | wc
  10151   91359 2394064

(after change)