Fix the topics for categories and categoryList queries according to PR magento2#30630 (#8123)

* Fix the topics for `categories` and `categoryList` queries according to PR magento2#30630

* Small fixes according to request by reviewer

Author: andrewbess

src/_includes/graphql/category-filter-input.md

@@ -4,6 +4,7 @@ Attribute | Data type | Description
 --- | --- | ---
 `ids` | FilterEqualTypeInput | Filters by the specified category IDs
 `name` | FilterMatchTypeInput | Filters by the display name of the category
+`parent_id` | FilterEqualTypeInput | Filters by parent category ID
 `url_key` | FilterEqualTypeInput | Filters by the part of the URL that identifies the category
 `url_path` | FilterEqualTypeInput | Filters by the URL path for the category
 

src/guides/v2.4/graphql/queries/categories.md

@@ -9,6 +9,7 @@ The `categories` query supports the following types of filters. You can specify
 
 -  Category ID
 -  Category name
+-  Parent category ID
 -  URL key
 -  URL path
 
@@ -33,7 +34,14 @@ The following query returns the top-level categories (as well as two levels of c
 
 ```graphql
 {
-  categories(filters: {ids: {in: ["3", "9", "11", "20", "37", "38"]}} pageSize:3 currentPage: 2){
+  categories(
+    filters: {
+      ids: {in: ["3", "9", "11", "20", "37", "38"]}
+      parent_id: {in: ["2"]}
+    }
+    pageSize:3
+    currentPage: 2
+  ) {
     total_count
     items {
       id

src/guides/v2.4/graphql/queries/category-list.md

@@ -12,6 +12,7 @@ The `categoryList` query supports the following types of filters. You can specif
 
 -  Category ID
 -  Category name
+-  Parent category ID
 -  URL key
 -  URL path
 
@@ -42,7 +43,12 @@ The following query returns information about category IDs `11` and `20` and two
 
 ```graphql
 {
-  categoryList(filters: {ids: {in: ["11", "20"]}}) {
+  categoryList(
+    filters: {
+      ids: {in: ["11", "20"]}
+      parent_id: {in: ["2"]}
+    }
+  ) {
     children_count
     children {
       id