Merge #10705: Trivial: spelling fixes

f42fc1d50 doc: spelling fixes (klemens)

Pull request description:

  patch contains some spelling fixes ( just in comments ) as found by a bot ( http://www.misfix.org, https://github.com/ka7/misspell_fixer ).

Tree-SHA512: ba6046cfcd81b0783420daae7d776be92dd7b85a593e212f8f1b4403aca9b1b6af12cef7080d4ea5ed4a14952fd25e4300109a59c414e08f5395cdb9947bb750

test/functional/example_test.py

@@ -200,7 +200,7 @@ class ExampleTest(BitcoinTestFramework):
         node2.add_connection(connections[1])
         node2.wait_for_verack()
 
-        self.log.info("Wait for node2 reach current tip. Test that it has propogated all the blocks to us")
+        self.log.info("Wait for node2 reach current tip. Test that it has propagated all the blocks to us")
 
         getdata_request = msg_getdata()
         for block in blocks: