Update proposals/1543-qr_code_key_verification.md

Co-Authored-By: Travis Ralston <travpc@gmail.com>

proposals/1543-qr_code_key_verification.md

@@ -192,7 +192,7 @@ strings in the general form:
     bytes of the ID as a UTF-8 string
   - the ID as a UTF-8 string
 - the first key, as 32 bytes.  The key to use depends on the mode field:
-  - if `0x00` or `0x01`, then the user's own master cross-signing public key
+  - if `0x00` or `0x01`, then the current user's own master cross-signing public key
   - if `0x02`, then the current device's device key
 - the second key, as 32 bytes.  The key to use depends on the mode field:
   - if `0x00`, then what the device thinks the other user's master