doc: correct typos

src/cluster_linearize.h

@@ -671,7 +671,7 @@ public:
         m_sorted_to_original(depgraph.TxCount()),
         m_original_to_sorted(depgraph.PositionRange())
     {
-        // Determine reordering mapping, by sorting by decreasing feerate. Unusued positions are
+        // Determine reordering mapping, by sorting by decreasing feerate. Unused positions are
         // not included, as they will never be looked up anyway.
         ClusterIndex sorted_pos{0};
         for (auto i : depgraph.Positions()) {

src/ipc/protocol.h

@@ -54,7 +54,7 @@ public:
     //! The optional `ready_fn` callback will be called after the event loop is
     //! created but before it is started. This can be useful in tests to trigger
     //! client connections from another thread as soon as the event loop is
-    //! available, but should not be neccessary in normal code which starts
+    //! available, but should not be necessary in normal code which starts
     //! clients and servers independently.
     virtual void serve(int fd, const char* exe_name, interfaces::Init& init, const std::function<void()>& ready_fn = {}) = 0;
 

src/pow.cpp

@@ -136,7 +136,7 @@ bool PermittedDifficultyTransition(const Consensus::Params& params, int64_t heig
 }
 
 // Bypasses the actual proof of work check during fuzz testing with a simplified validation checking whether
-// the most signficant bit of the last byte of the hash is set.
+// the most significant bit of the last byte of the hash is set.
 bool CheckProofOfWork(uint256 hash, unsigned int nBits, const Consensus::Params& params)
 {
     if constexpr (G_FUZZING) return (hash.data()[31] & 0x80) == 0;

src/test/txdownload_tests.cpp

@@ -82,7 +82,7 @@ static bool CheckOrphanBehavior(node::TxDownloadManagerImpl& txdownload_impl, co
     }
 
     if (expect_orphan != txdownload_impl.m_orphanage.HaveTx(tx->GetWitnessHash())) {
-        err_msg = strprintf("unexpectedly %s tx in orpanage", expect_orphan ? "did not find" : "found");
+        err_msg = strprintf("unexpectedly %s tx in orphanage", expect_orphan ? "did not find" : "found");
         return false;
     }
     if (expect_keep != ret.m_should_add_extra_compact_tx) {

test/functional/test_framework/socks5.py

@@ -114,7 +114,7 @@ class Socks5Connection():
         self.conn = conn
 
     def handle(self):
-        """Handle socks5 request according to RFC192."""
+        """Handle socks5 request according to RFC1928."""
         try:
             # Verify socks version
             ver = recvall(self.conn, 1)[0]