chore: Fix small typos in protocol files (#5279)

include/xrpl/protocol/AccountID.h

@@ -114,7 +114,7 @@ operator<<(std::ostream& os, AccountID const& x)
     is expensive (it requires a SHA-256 operation) in most cases the overhead
     of the cache is worth the benefit.
 
-    @param count The number of entries the cache should accomodate. Zero will
+    @param count The number of entries the cache should accommodate. Zero will
                  disable the cache, releasing any memory associated with it.
 
     @note The function will only initialize the cache the first time it is

include/xrpl/protocol/Sign.h

@@ -75,7 +75,7 @@ buildMultiSigningData(STObject const& obj, AccountID const& signingID);
 
     The following methods support that optimization:
      1. startMultiSigningData provides the large part which can be shared.
-     2. finishMuiltiSigningData caps the passed in serializer with each
+     2. finishMultiSigningData caps the passed in serializer with each
         signer's unique data.
 */
 Serializer

include/xrpl/protocol/TxFormats.h

@@ -30,7 +30,7 @@ namespace ripple {
 
     @ingroup protocol
 */
-/** Transaction type identifieers
+/** Transaction type identifiers
 
     Each ledger object requires a unique type identifier, which is stored
     within the object itself; this makes it possible to iterate the entire

src/xrpld/app/main/Main.cpp

@@ -55,7 +55,7 @@
 #include <sys/types.h>
 #endif
 
-// Do we know the plaform we're compiling on? If you're adding new platforms
+// Do we know the platform we're compiling on? If you're adding new platforms
 // modify this check accordingly.
 #if !BOOST_OS_LINUX && !BOOST_OS_WINDOWS && !BOOST_OS_MACOS
 #error Supported platforms are: Linux, Windows and MacOS