check referenced message as well

Signed-off-by: Amneesh Singh <natto@weirdnatto.in>

Cargo.lock

@@ -532,6 +532,15 @@ version = "0.2.97"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "12b8adadd720df158f4d70dfe7ccc6adb0472d7c55ca83445f6a5ab3e36f8fb6"
 
+[[package]]
+name = "linkify"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ccbcd666d915aa3ae3c3774999a9e20b2776a018309b8159d07df062b91f45e8"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "lock_api"
 version = "0.4.4"
@@ -1120,6 +1129,7 @@ dependencies = [
 name = "singh3"
 version = "0.1.0"
 dependencies = [
+ "linkify",
  "rand 0.8.4",
  "regex",
  "serenity",