py-sip-qt5: Explain how this is used

[Greg Troxel <gdt%lexort.com@localhost>]

Module Name:	pkgsrc-wip
Committed By:	Greg Troxel <gdt%lexort.com@localhost>
Pushed By:	gdt
Date:		Thu Dec 1 20:51:46 2022 -0500
Changeset:	7a07c18f0bb0d2f3144ad99e99c67f79e891f5fd

Modified Files:
	py-sip-qt5/DESCR

Log Message:
py-sip-qt5: Explain how this is used

To see a diff of this commit:
https://wip.pkgsrc.org/cgi-bin/gitweb.cgi?p=pkgsrc-wip.git;a=commitdiff;h=7a07c18f0bb0d2f3144ad99e99c67f79e891f5fd

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

diffstat:
 py-sip-qt5/DESCR | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diffs:
diff --git a/py-sip-qt5/DESCR b/py-sip-qt5/DESCR
index 58ba515b29..26865a3fe7 100644
--- a/py-sip-qt5/DESCR
+++ b/py-sip-qt5/DESCR
@@ -1 +1,3 @@
-The sip extension module provides support for the PyQt5 package.
+This packages contains a sip extension module, intended for use by
+x11/py-qt5.  (The sip module is used at runtime, rather than only at
+build time like sip.)