fix some typos

include/libtorrent/session_handle.hpp

@@ -678,7 +678,7 @@ namespace libtorrent
 		// class and returns a unique identifier.
 		//
 		// Identifiers are assigned from low numbers to higher. So if you plan on
-		// using certain peer classes in a call to `set_peer_class_filter()`_,
+		// using certain peer classes in a call to set_peer_class_filter(),
 		// make sure to create those early on, to get low identifiers.
 		//
 		// For more information on peer classes, see peer-classes_.

include/libtorrent/torrent.hpp

@@ -1610,7 +1610,7 @@ namespace libtorrent
 		// the number of bytes of padding files
 		boost::uint32_t m_padding:24;
 
-		// TODO: 8 bits available here
+		// TODO: gap of 8 bits available here
 
 // ----