Use probo.com for bare and marketing domain references

Replace the bare `getprobo.com` domain and the `www.getprobo.com`
marketing host with `probo.com` / `www.probo.com` across the codebase.
Functional subdomains (app, console, notification, custom, test,
cookie-banner, compliance) keep their existing `getprobo.com` hosts,
and changelog entries are left untouched.

Signed-off-by: Sacha Al Himdani <sacha@getprobo.com>

pkg/prosemirror/node_test.go

@@ -108,7 +108,7 @@ func TestUnmarshalDocument(t *testing.T) {
 
 			linkAttrs, err := linkNode.Marks[0].LinkAttrs()
 			require.NoError(t, err)
-			assert.Equal(t, "https://getprobo.com", linkAttrs.Href)
+			assert.Equal(t, "https://probo.com", linkAttrs.Href)
 			require.NotNil(t, linkAttrs.Target)
 			assert.Equal(t, "_blank", *linkAttrs.Target)
 			require.NotNil(t, linkAttrs.Rel)