update changelog headers

Author: Kristófer R

changelog.txt

@@ -1,5 +1,7 @@
 *** Changelog ***
 
+= 7.1.0 - 2022-xx-xx =
+
 = 7.0.0 - 2022-11-10 =
 * Add - Update Express Checkout section UI.
 * Add - Auto-complete first and last name on checkout form when using Link payment method.

readme.txt

@@ -128,12 +128,7 @@ If you get stuck, you can ask for help in the Plugin Forum.
 
 == Changelog ==
 
-= 7.0.0 - 2022-11-10 =
-* Add - Update Express Checkout section UI.
-* Add - Auto-complete first and last name on checkout form when using Link payment method.
-* Add - Allow subscription orders to be paid with Link payment method.
-* Add - Add inbox notification for Link payment method.
-* Tweak - Adjust texts and links in WC admin advanced settings.
-* Add - Restrict the Link payment method only for US merchants.
+= 7.1.0 - 2022-xx-xx =
+
 
 [See changelog for all versions](https://raw.githubusercontent.com/woocommerce/woocommerce-gateway-stripe/trunk/changelog.txt).