[mej/nhc] c2c3ef: Makefile.am: Add installed nhc path to grep

[Michael Jennings]

Branch: refs/heads/dev
Home: https://github.com/mej/nhc
Commit: c2c3efa9533c5f7e2559caf2efbe771b6215324c
https://github.com/mej/nhc/commit/c2c3efa9533c5f7e2559caf2efbe771b6215324c
Author: Michael Jennings <m...@lanl.gov>
Date: 2023-08-28 (Mon, 28 Aug 2023)

Changed paths:
M Makefile.am

Log Message:
-----------
Makefile.am: Add installed nhc path to grep

Relatively minor fix to 63c5678d: Since we can't guarantee that the
current directory will always be consistent, supply the path to the
freshly-installed `nhc` script to the `grep -q` command just as was
already being done with the `sed -i` command.