bip-0300: Fix upvote vector example

Author: luke-jr

bip-0300.mediawiki

@@ -291,7 +291,7 @@ The version number allows us to shrink the upvote vector in many cases. Version
 
 If a sidechain has no pending bundles, then it is skipped over when M4 is created and parsed.
 
-For example, an upvote vector of { 2 , N/A, 1 } would be represented as [0x6A,D77D1776,01,00,00]. It means: "upvote the first bundle in sidechain #1; and the first bundle in sidechain #3" (iff sidechains #2 has no bundles proposed).
+For example, an upvote vector of { 2 , N/A, 1 } would be represented as [0x6A,D77D1776,01,01,00]. It means: "upvote the second bundle in sidechain #1; and the first bundle in sidechain #3" (iff sidechains #2 has no bundles proposed).
 
 An upvote vector of { N/A, N/A, 4 } would be [0x6A,D77D1776,01,03].