Fix a typo in the getting passphrase prompt for the ed25519 identity key

changes/bug19503

@@ -0,0 +1,3 @@
+  o Minor bugfixes (user interface):
+    - Fix a typo in the getting passphrase prompt for the ed25519
+      identity key.

src/or/routerkeys.c

@@ -115,7 +115,7 @@ read_encrypted_secret_key(ed25519_secret_key_t *out,
 
   while (1) {
     ssize_t pwlen =
-      do_getpass("Enter pasphrase for master key:", pwbuf, sizeof(pwbuf), 0,
+      do_getpass("Enter passphrase for master key:", pwbuf, sizeof(pwbuf), 0,
                  get_options());
     if (pwlen < 0) {
       saved_errno = EINVAL;