Update 02_configuring_your_schema.md

- Doc spoke of four keywords, but example shows seven. Corrected instances of "four" in docs with "seven".

- Made it more explicit which keywords are being referred to (I think I got it right)

en/02_Developer_Guides/19_GraphQL/01_getting_started/02_configuring_your_schema.md

@@ -142,7 +142,7 @@ There are two approaches to namespacing:
 
 ##### Namespacing by filename
 
-If the filename is named one of the four keywords above, it will be implicitly placed
+If the filename is named one of the seven keywords used in the `app/_graphql/schema.yml` example above, it will be implicitly placed
 in the corresponding section of the schema - e.g. any configuration
 added to `app/_graphql/config.yml` will be implicitly added to
 `SilverStripe\GraphQL\Schema\Schema.schemas.default.config`.
@@ -177,7 +177,7 @@ will not work).
 
 ##### Namespacing by directory name
 
-If you use a parent directory name (at any depth) of one of the four keywords above, it will
+If you use a parent directory name (at any depth) of one of the seven keywords, it will
 be implicitly placed in the corresponding section of the schema - e.g. any configuration
 added to a `.yml` file in `app/_graphql/config/` will be implicitly added to
 `SilverStripe\GraphQL\Schema\Schema.schemas.default.config`.