Fix typo in ssl.RAND_bytes documentation (GH-14791)



It looks like "cryptographically strong" is the preferred phrase from the surrounding documentation.

Automerge-Triggered-By: @tiran
diff --git a/Doc/library/ssl.rst b/Doc/library/ssl.rst
index 279af57..2db48ae 100644
--- a/Doc/library/ssl.rst
+++ b/Doc/library/ssl.rst
@@ -293,7 +293,7 @@
    Read the Wikipedia article, `Cryptographically secure pseudorandom number
    generator (CSPRNG)
    <https://en.wikipedia.org/wiki/Cryptographically_secure_pseudorandom_number_generator>`_,
-   to get the requirements of a cryptographically generator.
+   to get the requirements of a cryptographically strong generator.
 
    .. versionadded:: 3.3