Fix a typo that confuses check-names.sh
diff --git a/include/mbedtls/debug.h b/include/mbedtls/debug.h
index 7d944f3..2957996 100644
--- a/include/mbedtls/debug.h
+++ b/include/mbedtls/debug.h
@@ -97,7 +97,7 @@
 void mbedtls_debug_set_threshold( int threshold );
 
 /**
-* \brief    Print a message to the debug output. This function is always used
+ * \brief    Print a message to the debug output. This function is always used
  *          through the MBEDTLS_SSL_DEBUG_MSG() macro, which supplies the ssl
  *          context, file and line number parameters.
  *