Update bip-0443.mediawiki

Author: bethoffman

bip-0443.mediawiki

@@ -238,7 +238,7 @@ The following notations are used in the pseudocode below:
 ==== Transaction-wide initialization ====
 
 This is executed once for the entire transaction, before any of the transaction input's scripts are evaluated.
-Itinitializes three arrays that are used to keep track of the amount information of the output.
+It initializes three arrays that are used to keep track of the amount information of the output.
 
 <source lang="python">
   output_min_amount = [0] * n_outputs