bpo-36209: Fix typo on hashlib error message (GH-12194)

diff --git a/Modules/_hashopenssl.c b/Modules/_hashopenssl.c
index aae558c..e560c18 100644
--- a/Modules/_hashopenssl.c
+++ b/Modules/_hashopenssl.c
@@ -775,7 +775,7 @@
     if (!retval) {
         /* sorry, can't do much better */
         PyErr_SetString(PyExc_ValueError,
-                        "Invalid paramemter combination for n, r, p, maxmem.");
+                        "Invalid parameter combination for n, r, p, maxmem.");
         return NULL;
    }