[DOC] Improve Random::Formatter docs

* Make its usage more obvious (by providing more detailed
  examples);
* Include mention of it into Random itself;
* Small cleanups of docs.

1 files changed, 3 insertions, 0 deletions

diff --git a/random.c b/random.c
index 759e15335a..4b5b7ab6c4 100644
--- a/random.c
+++ b/random.c
@@ -1803,6 +1803,9 @@ rb_reset_random_seed(void)
  * PRNGs are currently implemented as a modified Mersenne Twister with a period
  * of 2**19937-1.  As this algorithm is _not_ for cryptographical use, you must
  * use SecureRandom for security purpose, instead of this PRNG.
+ *
+ * See also Random::Formatter module that adds convenience methods to generate
+ * various forms of random data.
  */
 
 void