DEVDOCS-6473 - Unified Storefront GraphQL: Account registration workflows (#1105)

Fixed a bad link identified after merging.

#
[DEVDOCS-6473](https://bigcommercecloud.atlassian.net/browse/DEVDOCS-6473)


## What changed?

* The link to the BC `registerCompany` mutation guide no longer goes to
a non-existent URL.

## Release notes draft

* The link to learn more about the `registerCompany` mutation has been
fixed.

## Anything else?

ping @bc-terra 


[DEVDOCS-6473]:
https://bigcommercecloud.atlassian.net/browse/DEVDOCS-6473?atlOrigin=eyJpIjoiNWRkNTljNzYxNjVmNDY3MDlhMDU5Y2ZhYzA5YTRkZjUiLCJwIjoiZ2l0aHViLWNvbS1KU1cifQ

Author: bc-Vince

docs/b2b-edition/specs/storefront/storefront/company.yaml

@@ -71,7 +71,7 @@ paths:
 
         Equivalent Storefront GraphQL API Mutation: `companyCreate`. For more information, see the [GraphQL Playground](https://api-b2b.bigcommerce.com/graphql/playground).
 
-        > The `registerCompany` mutation in the BigCommerce Storefront GraphQL API also allows you to create a new Company account as a storefront customer. See [Company Account Registration](/docs/storefront/graphql/b2b/company-account-registration) to learn more.
+        > The `registerCompany` mutation in the BigCommerce Storefront GraphQL API also allows you to create a new Company account as a storefront customer. See [Company Account Registration](/docs/storefront/graphql/b2b/account-registration) to learn more.
 
         If you have configured required information fields in your store’s Extra Fields settings for Company accounts or Company users, you must include the field’s name and value in the `extraFields` array of the request body. For more information on extra fields, see [B2B Edition Settings](https://support.bigcommerce.com/s/article/B2B-Edition-Settings) in the Help Center.
       parameters: []