Tidy up spelling

Change-Id: I65fba9d8310ff3759322cec3345235e6472f4cfb
diff --git a/runtime/mem_map.cc b/runtime/mem_map.cc
index cf4233c..d8c1ec1 100644
--- a/runtime/mem_map.cc
+++ b/runtime/mem_map.cc
@@ -221,7 +221,7 @@
   // We call this here so that we can try and generate a full error
   // message with the overlapping mapping. There's no guarantee that
   // that there will be an overlap though, since
-  // - The kernel is not *required* to honour expected_ptr unless MAP_FIXED is
+  // - The kernel is not *required* to honor expected_ptr unless MAP_FIXED is
   //   true, even if there is no overlap
   // - There might have been an overlap at the point of mmap, but the
   //   overlapping region has since been unmapped.