DOCSP-30681: fix pricing link (#604)

Author: jwilliams-mongo

source/pricing.txt

@@ -32,7 +32,7 @@ Charts data transfers at a fixed rate of **$1.00 per GB**.
 
 In addition, any applicable |service| data transfer fees apply, as per
 the :guilabel:`Data Transfer Fees` section of the
-`Atlas Pricing <https://www.mongodb.com/cloud/atlas/pricing>`__ page.
+`Atlas Pricing <https://www.mongodb.com/pricing>`__ page.
 |charts-short| is hosted on |aws| ``us-east-1`` region, and
 uses this region to calculate the fees.