Fix missing ref support for textAlign and textColumns in theme.json s…

…chema (#63625)

* Add missing ref support for textAlign and textColumns

* Update the theme.json reference docs

Co-authored-by: ajlende <ajlende@git.wordpress.org>
Co-authored-by: t-hamano <wildworks@git.wordpress.org>
Co-authored-by: jeryj <jeryj@git.wordpress.org>

docs/reference-guides/theme-json-reference/theme-json-living.md

@@ -270,8 +270,8 @@ Typography styles.
 | fontWeight | string, object |  |
 | letterSpacing | string, object |  |
 | lineHeight | string, object |  |
-| textAlign | string |  |
-| textColumns | string |  |
+| textAlign | string, object |  |
+| textColumns | string, object |  |
 | textDecoration | string, object |  |
 | writingMode | string, object |  |
 | textTransform | string, object |  |

schemas/json/theme.json

@@ -1678,11 +1678,25 @@
 						},
 						"textAlign": {
 							"description": "Sets the `text-align` CSS property.",
-							"type": "string"
+							"oneOf": [
+								{
+									"type": "string"
+								},
+								{
+									"$ref": "#/definitions/refComplete"
+								}
+							]
 						},
 						"textColumns": {
 							"description": "Sets the `column-count` CSS property.",
-							"type": "string"
+							"oneOf": [
+								{
+									"type": "string"
+								},
+								{
+									"$ref": "#/definitions/refComplete"
+								}
+							]
 						},
 						"textDecoration": {
 							"description": "Sets the `text-decoration` CSS property.",