fix(summary): correct typos in custom summaries samples

Author: georgianastasov

src/app/grid/grid-allData-summary/grid-allData-summary.component.ts

@@ -9,7 +9,7 @@ class DiscontinuedSummary {
         const result = [];
         result.push({
             key: 'products',
-            label: 'Producs',
+            label: 'Products',
             summaryResult: data.length
         });
         result.push({
@@ -19,7 +19,7 @@ class DiscontinuedSummary {
         });
         result.push({
             key: 'discontinued',
-            label: 'Discontinued Producs',
+            label: 'Discontinued Products',
             summaryResult: allData.map(r => r['Discontinued']).filter((rec) =>  rec).length
             });
         result.push({

src/app/grid/grid-summary-template/grid-summary-template.component.ts

@@ -9,7 +9,7 @@ class DiscontinuedSummary {
         const result = [];
         result.push({
             key: 'products',
-            label: 'Producs',
+            label: 'Products',
             summaryResult: data.length
         });
         result.push({
@@ -19,7 +19,7 @@ class DiscontinuedSummary {
         });
         result.push({
             key: 'discontinued',
-            label: 'Discontinued Producs',
+            label: 'Discontinued Products',
             summaryResult: allData.map(r => r['Discontinued']).filter((rec) => rec).length
         });
         result.push({