Update regex

src/PlainNormalizer/PlainNormalizer.ts

@@ -28,14 +28,20 @@ const patchOutlookSafelinksWrappers = (text: string) => {
   return text;
 };
 
+/**
+ * Function removes seal from the plain text.
+ * Function has to support the next possible file names of the seal:
+ * qrcode.png, qrcode-xxx.png, seal-xxx.png
+ * @param s
+ */
 const removeQRCodes = (s: string): string => {
   return s
     .replace(
-      /\[(image:\s)*qrcode.png]\s*<https:\/\/.+(vereign\.com|vrgnservices\.com).*?>/g,
+      /\[(image:\s)*(qrcode|seal).*?.png]\s*<https:\/\/.+(vereign\.com|vrgnservices\.com).*?>/g,
       ""
     )
     .replace(
-      /<https:\/\/.+(vereign\.com|vrgnservices\.com).*?>\s*\[(image: )*qrcode.png]/g,
+      /<https:\/\/.+(vereign\.com|vrgnservices\.com).*?>\s*\[(image: )*(qrcode|seal).*?.png]/g,
       ""
     );
 };