[range] fix some minor typos in comments - fixes #7916

[SVN r82594]

test/adl_conformance.cpp

@@ -11,7 +11,7 @@
 #include <boost/detail/workaround.hpp>
 
 #if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
-#  pragma warn -8091 // supress warning in Boost.Test
+#  pragma warn -8091 // suppress warning in Boost.Test
 #  pragma warn -8057 // unused argument argc/argv in Boost.Test
 #endif