chore: naming inconsistency project grants (#11488)

# Which Problems Are Solved

As part of the consistent naming effort, this PR focuses on "Project
Grants".

# How the Problems Are Solved

All terms referring to a project being granted to another organization
for self-management were changed to "Project Grant" or "project grant".

# Additional Changes

None

# Additional Context

- closes #11287

apps/docs/content/concepts/structure/_org_description.mdx

@@ -12,6 +12,6 @@ You can use projects within your organization to manage the security context of
 
 ZITADEL allows you to give other organizations permission to manage certain aspects of a project within your organization on their own. This means you could set up a project with roles that should exist within your service/software, but allow another organization to allocate the roles to users within their own organization. As a service provider, you will find this feature useful, as it allows you to establish a self-service culture for your business customers.
 
-![](../../../public/img/concepts/objects/organization_grants.png)
+![Project Grant](../../../public/img/concepts/objects/project_grants.png)
 
 Each organization has its own pool of usernames, which includes human and service users, for its domain (`{username}@{OrganizationDomain}.$CUSTOM_DOMAIN`). A username is unique within your organization. You can configure ZITADEL to use your own domain, and simplify user experience (`{loginname}@{yourdomain.tld}`).

apps/docs/content/concepts/structure/_project_description.mdx

@@ -1,6 +1,6 @@
 The idea of projects is to have a vessel for all components who are closely related to each other. Multiple projects can exist within an organization.
 
-![](../../../public/img/concepts/objects/organization_grants.png)
+![Project Grant](../../../public/img/concepts/objects/project_grants.png)
 
 All applications within a project share the same roles, grants, and authorizations:
 

apps/docs/content/concepts/structure/granted_projects.mdx

@@ -5,10 +5,10 @@ sidebar_label: Granted Projects
 
 # Granted Project
 
-![](../../../public/img/concepts/objects/organization_grants.png)
+![Project Grant](../../../public/img/concepts/objects/project_grants.png)
 
 With ZITADEL you can grant selected roles within your project to an organization. The receiving organization can then create authorizations for their users on their own (self-service).
 
 An example could be a service provider that offers a SaaS solution that has different permissions for employees working in Sales and Accounting. As soon as a new client purchases the service, the provider could grant the roles ‘sales’ and ‘accounting’ to that organization, allowing them to self-manage how they want to allocate the roles to their users.
 
-To learn more about how to setup Project grants, read this guide [here](../../guides/manage/console/projects-overview#granted-projects-b2b)
+To learn more about how to set up Project Grants, read this guide [here](../../guides/manage/console/projects-overview#granted-projects-b2b)