docs: rename RFC 008 (#7841)

While the name including an apostrophe is perfectly legal, it turns out to
confuse some tools that don't escape things properly. Rename to remove the
apostrophe rather than fight the world.

Fixes #7836.

docs/rfc/README.md

@@ -45,7 +45,7 @@ sections.
 - [RFC-005: Event System](./rfc-005-event-system.rst)
 - [RFC-006: Event Subscription](./rfc-006-event-subscription.md)
 - [RFC-007: Deterministic Proto Byte Serialization](./rfc-007-deterministic-proto-bytes.md)
-- [RFC-008: Don't Panic](./rfc-008-don't-panic.md)
+- [RFC-008: Don't Panic](./rfc-008-do-not-panic.md)
 - [RFC-009: Consensus Parameter Upgrades](./rfc-009-consensus-parameter-upgrades.md)
 - [RFC-010: P2P Light Client](./rfc-010-p2p-light-client.rst)
 - [RFC-011: Delete Gas](./rfc-011-delete-gas.md)