Corrected naming and text in doxygen rng module
Doxygen input file had incorrect function name for rng function
mbedtls_ctr_drbg_random(), and formatting was fixed.
diff --git a/doxygen/input/doc_rng.h b/doxygen/input/doc_rng.h
index bd99a1a..0159ef3 100644
--- a/doxygen/input/doc_rng.h
+++ b/doxygen/input/doc_rng.h
@@ -24,19 +24,19 @@
* @addtogroup rng_module Random number generator (RNG) module
*
* The Random number generator (RNG) module provides random number
- * generation, see \c ctr_dbrg_random().
+ * generation, see \c mbedtls_ctr_drbg_random().
*
* The block-cipher counter-mode based deterministic random
* bit generator (CTR_DBRG) as specified in NIST SP800-90. It needs an external
- * source of entropy. For these purposes \c mbedtls_entropy_func() can be used. This is
- * an implementation based on a simple entropy accumulator design.
+ * source of entropy. For these purposes \c mbedtls_entropy_func() can be used.
+ * This is an implementation based on a simple entropy accumulator design.
*
- * The other number generator that is included is less strong and uses the HAVEGE
- * (HArdware Volatile Entropy Gathering and Expansion) software heuristic
+ * The other number generator that is included is less strong and uses the
+ * HAVEGE (HArdware Volatile Entropy Gathering and Expansion) software heuristic
* which considered unsafe for primary usage, but provides additional random
* to the entropy pool if enables.
*
- * \* Meaning that there seems to be no practical algorithm that can guess
+ * Meaning that there seems to be no practical algorithm that can guess
* the next bit with a probability larger than 1/2 in an output sequence.
*
* This module can be used to generate random numbers.