Update index.json

Author: railslectures

index.json

@@ -1249,6 +1249,11 @@
       "file": "implement-lightcellsdatahandler-to-convert-all-text-cells-to-uppercase-while-reading-a-workbook-for-standardization.cs",
       "title": "Implement LightCellsDataHandler to convert all text cells to uppercase while reading a workbook for standardization."
     },
+    {
+      "category": "open-workbook",
+      "file": "implement-lightcellsdatahandler-to-replace-error-values-with-zero-during-load-ensuring-clean-numeric-datasets-for-analysis.cs",
+      "title": "Implement LightCellsDataHandler to replace error values with zero during load, ensuring clean numeric datasets for analysis."
+    },
     {
       "category": "open-workbook",
       "file": "include-worksheets-matching-the-pattern-q0-9-using-loadoptionsloadfilter-with-a-regular-expression-filter.cs",