Rename to mbed TLS in the documentation/comments
diff --git a/library/md_wrap.c b/library/md_wrap.c
index fdae018..9ec0f5e 100644
--- a/library/md_wrap.c
+++ b/library/md_wrap.c
@@ -1,7 +1,7 @@
 /**
  * \file md_wrap.c
 
- * \brief Generic message digest wrapper for PolarSSL
+ * \brief Generic message digest wrapper for mbed TLS
  *
  * \author Adriaan de Jong <dejong@fox-it.com>
  *