fix comment on legacy SigAlgs

Summary: Land attempt was made before I saw mingtaoy's comment https://www.internalfb.com/diff/D66736193?dst_version_fbid=415120498346426&transaction_fbid=1789536688473353

Reviewed By: mingtaoy

Differential Revision: D66813426

fbshipit-source-id: 393d1fa3c9567df899817a7723a914a33c3075d9

fizz/record/Types.cpp

@@ -236,7 +236,11 @@ std::string toString(SignatureScheme sigScheme) {
     case SignatureScheme::rsa_pss_sha256_batch:
       return "rsa_pss_sha256_batch";
   }
-  // Handle legacy/compatibility algorithms
+  /**
+   * Fizz does not support these algorithms. They are listed
+   * here solely to aid in debugging when printing non-TLS 1.3
+   * ClientHellos (for example, in the fizzHandshakeFallback path)
+   */
   uint16_t val = static_cast<uint16_t>(sigScheme);
   switch (val) {
     // RSASSA-PKCS1-v1_5 algorithms
@@ -246,10 +250,7 @@ std::string toString(SignatureScheme sigScheme) {
       return "rsa_pkcs1_sha384";
     case 0x0601:
       return "rsa_pkcs1_sha512";
-    // Fizz does not support these algorithms. They are listed
-    // here solely to aid in debugging when printing non-TLS 1.3
-    // ClientHellos (for example, in the fizzHandshakeFallback
-    // path)
+    // Legacy algorithms
     case 0x0201:
       return "rsa_pkcs1_sha1";
     case 0x0203: