Fix --help description interpolation.

t/lib/samples/bash/po003.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+
+:
+
+# ############################################################################
+# Documentation
+# ############################################################################
+:<<'DOCUMENTATION'
+=pod
+
+=head1 NAME
+
+pt-stalk - Wait for a condition to occur then begin collecting data.
+
+=head1 OPTIONS
+
+=over
+
+=item --disk-pct-limit
+
+type: int; default: 5
+
+Exit if the disk is less than this %full.
+
+=item --help
+
+Print help.
+
+=back
+
+=head1 ENVIRONMENT
+
+No env vars used.
+
+=cut
+
+DOCUMENTATION