Thunderbird eval fix (#233)

* ver Jul2nd

updated task requiring set up new email account

* ver Jul3rd

fixed several tasks

evaluation_examples/examples/thunderbird/3f28fe4f-5d9d-4994-a456-efd78cfae1a3.json

@@ -1,7 +1,7 @@
 {
   "id": "3f28fe4f-5d9d-4994-a456-efd78cfae1a3",
   "snapshot": "thunderbird",
-  "instruction": "Set up a signature using my name and affiliation. My name is Anonym and my affiliation is XYZ Lab.",
+  "instruction": "Set up a plain text signature for my email account in Thunderbird. The first line is my name \"Anonym\" and the second line is my affiliation \"XYZ Lab\".",
   "source": "https://www.adsigner.com/user-manual/signatures/setup-email-client-thunderbird/#:~:text=is%20probably%20hidden.-,Right%20click%20on%20the%20empty%20space%20at%20the%20top%20of,signature%20from%20a%20file%20instead.",
   "config": [
     {
@@ -70,7 +70,7 @@
         "expect": {
           "mail.identity.id1.htmlSigText": {
             "method": "re.S",
-            "ref": "Anonym.+XYZ Lab"
+            "ref": "Anonym\\nXYZ Lab"
           }
         }
       }
@@ -78,4 +78,4 @@
     "func": "check_thunderbird_prefs"
   },
   "proxy": false
-}
+}