Typo fix in gen-test-certs.sh
# tests/tls/ca.{crt,key} Self signed CA certificate.
# tests/tls/redis.{crt,key} A certificate with no key usage/policy restrictions.
# tests/tls/client.{crt,key} A certificate restricted for SSL client usage.
-# tests/tls/server.{crt,key} A certificate restricted fro SSL server usage.
+# tests/tls/server.{crt,key} A certificate restricted for SSL server usage.
# tests/tls/redis.dh DH Params file.
generate_cert() {
