bpo-20216: Correct docstrings of digest() methods in hashlib. (GH-9873)

diff --git a/Modules/clinic/md5module.c.h b/Modules/clinic/md5module.c.h
index 850d76b..fa1a0d6 100644
--- a/Modules/clinic/md5module.c.h
+++ b/Modules/clinic/md5module.c.h
@@ -24,7 +24,7 @@
 "digest($self, /)\n"
 "--\n"
 "\n"
-"Return the digest value as a string of binary data.");
+"Return the digest value as a bytes object.");
 
 #define MD5TYPE_DIGEST_METHODDEF    \
     {"digest", (PyCFunction)MD5Type_digest, METH_NOARGS, MD5Type_digest__doc__},
@@ -94,4 +94,4 @@
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=50a95670913de8fb input=a9049054013a1b77]*/
+/*[clinic end generated code: output=72aa003c308e26cf input=a9049054013a1b77]*/