add: back to home on guidance note

guidance_note_wb.md

@@ -3,6 +3,8 @@ layout: default
 title: "Guidance to Authors"
 ---
 
+[![Back to Home](https://img.shields.io/badge/Back_to-Home-blue)](./index.html)
+
 # Guidance Note for World Bank Staff and Consultants on Reproducible Publications
 
 To enhance the credibility, transparency, and impact of the World Bank’s analytical products, the World Bank's Development Economics Vice Presidency (DEC) launched a new [Reproducible Research Repository](https://reproducibility.worldbank.org/) that documents the data and code on which analytics are based.
@@ -102,6 +104,6 @@ The reproducibility package will be published concurrently with the publication.
 The cover page of the publication will include the Reproducible Research Seal to indicate that a verified reproducibility package is available, and provide the permanent URL for the package.
 The publication, the reproducibility package in the Reproducible Research Repository, and any data sources in the MicroData Library or Development Data Hub will all be cross-linked to maximize discoverability.
 
-[![Back to Home](https://img.shields.io/badge/Back_to-Home-blue)](/index.html)
+[![Back to Home](https://img.shields.io/badge/Back_to-Home-blue)](./index.html)