Update changelogs from fern repo (#4941)

Co-authored-by: thesandlord <8902396+thesandlord@users.noreply.github.com>

Author: fern-support

fern/products/cli-api-reference/cli-changelog/2026-04-15.mdx

@@ -0,0 +1,6 @@
+## 4.70.1
+**`(fix):`** Fix "Edit this page" button appearing on docs sites that never configured it.
+The default `editThisPageLaunch` is now `undefined` instead of `"dashboard"`,
+so the button only renders when explicitly configured.
+
+