fix: strip regex delimiters so email validation works (#187)

useContactForm feeds validation_pattern straight to new RegExp(), so the /.../ delimiters were treated as literal characters and rejected every valid email.

Author: Sagargupta16

data/contact.json

@@ -45,6 +45,6 @@
       "service_id": "service_lyt547p",
       "template_id": "template_yz438w6",
       "public_key": "PAcL61ygLI8WYG16R",
-      "validation_pattern": "/^[\\w.%+-]+@[\\w.-]+\\.[a-zA-Z]{2,}$/"
+      "validation_pattern": "^[\\w.%+-]+@[\\w.-]+\\.[a-zA-Z]{2,}$"
    }
 }