slip-0039: whitespace fix

slip-0039.md

@@ -72,7 +72,9 @@ Passphrase should contain only printable ASCII characters (codepoints 32-126) to
 
 ![passphrase](slip-0039/passphrase.png)
 
-We will use `PBKDF2(PRF = HMAC-SHA256, Password = master_secret, Salt = ("slip0039" || passphrase || n), iterations = 20000, dkLen = 256 bits)` as the key derivation function. Nonce value `n` is encoded as two lowercase words from the wordlist separated by exactly one space (codepoint 32).
+We will use `PBKDF2(PRF = HMAC-SHA256, Password = master_secret, Salt = ("slip0039" || passphrase || n), iterations = 20000, dkLen = 256 bits)` as the key derivation function.
+
+Nonce value `n` is encoded as two lowercase words from the wordlist separated by exactly one space (codepoint 32).
 
 We suggest to use the obtained seed as a master seed `S` for Hierarchical Deterministic Wallets described in BIP-0032.