Merge pull request #1899 from adityaax/patch-1

Update registration-vulnerabilities.md

Author: carlospolop

src/pentesting-web/registration-vulnerabilities.md

@@ -12,7 +12,7 @@
   - +1@
   - add some dot in the email
   - special characters in the email name (%00, %09, %20)
-  - Put black characters after the email: `test@test.com a`
+  - Put blank characters after the email: `test@test.com a`
   - victim@gmail.com@attacker.com
   - victim@attacker.com@gmail.com
   - Try email provider canonicalization tricks (service-dependent):