Adapt the default feedback string for SKU assessment

packages/yoastseo/spec/scoring/assessments/seo/ProductSKUAssessmentSpec.js

@@ -98,8 +98,7 @@ describe( "a test for SKU assessment for WooCommerce", function() {
 
 		expect( assessmentResult.getScore() ).toEqual( 6 );
 		expect( assessmentResult.getText() ).toEqual( "<a href='https://yoa.st/4lw' target='_blank'>SKU</a>:" +
-			" Not all your product variants have a SKU. You can add a SKU via the \"Variations\" tab in the Product " +
-			"data box. <a href='https://yoa.st/4lx' target='_blank'>Include it if you can, as it will help search " +
+			" Not all your product variants have a SKU. <a href='https://yoa.st/4lx' target='_blank'>Include it if you can, as it will help search " +
 			"engines to better understand your content.</a>" );
 	} );
 
@@ -116,8 +115,7 @@ describe( "a test for SKU assessment for WooCommerce", function() {
 
 		expect( assessmentResult.getScore() ).toEqual( 6 );
 		expect( assessmentResult.getText() ).toEqual( "<a href='https://yoa.st/4lw' target='_blank'>SKU</a>:" +
-			" Not all your product variants have a SKU. You can add a SKU via the \"Variations\" tab in the Product " +
-			"data box. <a href='https://yoa.st/4lx' target='_blank'>Include it if you can, as it will help search " +
+			" Not all your product variants have a SKU. <a href='https://yoa.st/4lx' target='_blank'>Include it if you can, as it will help search " +
 			"engines to better understand your content.</a>" );
 	} );
 
@@ -213,7 +211,7 @@ describe( "a test for SKU assessment for Shopify", () => {
 				withVariants: sprintf(
 					/* translators: %1$s and %2$s expand to links on yoast.com, %3$s expands to the anchor end tag. */
 					__(
-						"%1$sSKU%3$s: Not all your product variants have a SKU. You can add a SKU via the \"Variations\" tab in the Product data box. %2$sInclude it if you can, as it will help search engines to better understand your content.%3$s",
+						"%1$sSKU%3$s: Not all your product variants have a SKU. %2$sInclude it if you can, as it will help search engines to better understand your content.%3$s",
 						"yoast-woo-seo"
 					),
 					urlTitleAnchorOpeningTag,

packages/yoastseo/spec/scoring/assessors/productPages/fullTextTests/testTexts/en/englishPaper3.js

@@ -107,8 +107,7 @@ const expectedResults = {
 	productSKU: {
 		isApplicable: true,
 		score: 6,
-		resultText: "<a href='https://yoa.st/4lw' target='_blank'>SKU</a>: Not all your product variants have a SKU. You can add a SKU via " +
-			"the \"Variations\" tab in the Product data box. <a href='https://yoa.st/4lx' target='_blank'>Include " +
+		resultText: "<a href='https://yoa.st/4lw' target='_blank'>SKU</a>: Not all your product variants have a SKU. <a href='https://yoa.st/4lx' target='_blank'>Include " +
 			"it if you can, as it will help search engines to better understand your content.</a>",
 	},
 	imageKeyphrase: {

packages/yoastseo/src/scoring/assessments/seo/ProductSKUAssessment.js

@@ -170,7 +170,7 @@ export default class ProductSKUAssessment extends Assessment {
 				},
 				okay: {
 					withoutVariants: "%1$sSKU%3$s: Your product is missing a SKU. %2$sInclude it if you can, as it will help search engines to better understand your content.%3$s",
-					withVariants: "%1$sSKU%3$s: Not all your product variants have a SKU. You can add a SKU via the \"Variations\" tab in the Product data box. %2$sInclude it if you can, as it will help search engines to better understand your content.%3$s",
+					withVariants: "%1$sSKU%3$s: Not all your product variants have a SKU. %2$sInclude it if you can, as it will help search engines to better understand your content.%3$s",
 				},
 			};
 			defaultResultTexts.good = mapValues(