header typo

Author: psztorc

bip-0300.mediawiki

@@ -290,7 +290,7 @@ If the '''quantity of coins''', in the from-CTIP-to-CTIP transaction, goes '''up
 
 As far as mainchain consensus is concerned, all deposits to a sidechain are always valid.
 
-===== M6 -- Withdraw BTC from a Sidechain =====
+==== M6 -- Withdraw BTC from a Sidechain ====
 
 We come, finally, to the critical matter: where users can take their money *out* of the sidechain.