Merge bitcoin/bitcoin#23981: doc: Fix typo in LoadBlockIndex

c03cf38 doc: Fix typo in LoadBlockIndex (brunoerg)

Pull request description:

  Instad -> Instead

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Tree-SHA512: 37dcdd34e2bd985619daecc9d1072ac002f3bc7b47db413432d027a2b8cce32501f93a57ee85869755bb0eedecedfab6ecac9ce2a591341c8f011118390a5b18

Author: MarcoFalke

src/node/blockstorage.cpp

@@ -315,7 +315,7 @@ bool BlockManager::LoadBlockIndex(
             // because they will still be attached to the active chainstate if they
             // actually contain more work.
             //
-            // Instad of this height-based approach, an earlier attempt was made at
+            // Instead of this height-based approach, an earlier attempt was made at
             // detecting "holistically" whether the block index under consideration
             // relied on an assumed-valid ancestor, but this proved to be too slow to
             // be practical.