Shorten pull/issue URLs in `generate-email.sh`
diff --git a/.github/generate-email.sh b/.github/generate-email.sh
index f30d9eb..926c306 100755
--- a/.github/generate-email.sh
+++ b/.github/generate-email.sh
@@ -48,7 +48,8 @@
 }
 
 dump_release_notes() {
-    awk "f{print} /^Release date::/{f=1}" "$RELEASE_NOTES_FILE"
+    awk "f{print} /^Release date::/{f=1}" "$RELEASE_NOTES_FILE" \
+        | sed -r 's!'$PROJECT_REPO'/(issues|pull)/[0-9]+\[([0-9]+)\]!#\2!g'
 }
 
 case $1 in