Various fixes to doxygen API generation

 * Fixed incorrect file definitions
 * Fixed accidental tag problems in ecjpake.h
 * Corrected function naming in X.509 module definition
diff --git a/include/mbedtls/compat-1.3.h b/include/mbedtls/compat-1.3.h
index 1ddfff8..27abbd9 100644
--- a/include/mbedtls/compat-1.3.h
+++ b/include/mbedtls/compat-1.3.h
@@ -1,7 +1,8 @@
 /**
- * \file config.h
+ * \file compat-1.3.h
  *
- * \brief Compatibility names (set of defines)
+ * \brief Compatibility definitions for using mbed TLS with client code written
+ *  for the PolarSSL naming conventions.
  *
  * \deprecated Use the new names directly instead
  *