Rename to mbed TLS in the documentation/comments
diff --git a/include/polarssl/error.h b/include/polarssl/error.h
index e032cda..f9f41f1 100644
--- a/include/polarssl/error.h
+++ b/include/polarssl/error.h
@@ -102,7 +102,7 @@
 #endif
 
 /**
- * \brief Translate a PolarSSL error code into a string representation,
+ * \brief Translate a mbed TLS error code into a string representation,
  *        Result is truncated if necessary and always includes a terminating
  *        null byte.
  *