add promo include to index.adoc

doc/modules/ROOT/pages/index.adoc

@@ -27,7 +27,7 @@ The manual covers the following areas:
 * xref:installation/index.adoc[Installation] -- Instructions for how to install and use the Neo4j Graph Data Science library.
 * xref:common-usage/index.adoc[Common usage] -- General usage patterns and recommendations for getting the most out of the Neo4j Graph Data Science library.
 * xref:management-ops/index.adoc[Graph management] -- A detailed guide to the graph catalog and utility procedures included in the Neo4j Graph Data Science library.
-* xref:algorithms/index.adoc[Graph algorithms] -- A detailed guide to each of the algorithms in their respective categories, including use-cases and examples.
+* xref:algorithms/index.adoc[Graph algorithms] -- A detailed guide to each algorithm in their respective categories, including use-cases and examples.
 * xref:machine-learning/machine-learning.adoc[Machine learning] -- A detailed guide to the machine learning procedures included in the Neo4j Graph Data Science library.
 * xref:production-deployment/index.adoc[Production deployment] -- This chapter explains advanced details with regards to common Neo4j components.
 * xref:python-client/index.adoc[Python client] -- Documentation of the Graph Data Science client for Python users.
@@ -36,7 +36,9 @@ The manual covers the following areas:
 * xref:migration-lcp-to-cpv2/index.adoc[Migration from Legacy to new Cypher projections] -- Migration guide to help migration from the Legacy Cypher projections to the new Cypher projections.
 
 The source code of the library is available at https://github.com/neo4j/graph-data-science[GitHub].
-If you have a suggestion on how we can improve the library or want to report a problem, you can create a https://github.com/neo4j/graph-data-science/issues/new[new issue].
+If you have suggestions for improving the library or want to report a problem, you can create a https://github.com/neo4j/graph-data-science/issues/new[new issue].
+
+include::{ga-promos-uri}/{ga-promo}.adoc[]
 
 
 // ifdef::backend-html5[]