doc: fix typos

src/test/fuzz/txorphan.cpp

@@ -146,7 +146,7 @@ FUZZ_TARGET(txorphan, .init = initialize_orphanage)
                             Assert(orphanage->TotalOrphanUsage() <= total_bytes_start);
                         }
                     }
-                    // We are not guaranteed to have_tx after AddTx. There are a few possibile reasons:
+                    // We are not guaranteed to have_tx after AddTx. There are a few possible reasons:
                     // - tx itself exceeds the per-peer memory usage limit, so LimitOrphans had to remove it immediately
                     // - tx itself exceeds the per-peer latency score limit, so LimitOrphans had to remove it immediately
                     // - the orphanage needed trim and all other announcements from this peer are reconsiderable

test/functional/p2p_compactblocks.py

@@ -744,7 +744,7 @@ class CompactBlocksTest(BitcoinTestFramework):
         assert_not_equal(node.getbestblockhash(), block.hash_hex)
         test_node.sync_with_ping()
 
-        # The failure above was cached. Submitting the compact block again will returned a cached
+        # The failure above was cached. Submitting the compact block again will return a cached
         # consensus error (the code path is different) and still not get us disconnected (nor
         # advance the tip).
         test_node.send_and_ping(msg)