Add functional subtitles to the end-to-end EO infrastructure section

Author: zacdezgeo

docs/src/overrides/home.html

@@ -112,7 +112,7 @@ <h3>
                                     Catalog Your Data
                                 </h3>
                                 <h5>
-                                    pgSTAC
+                                    pgSTAC - Postgres STAC Extension
                                 </h5>
                                 <p>pg-STAC is an optimized Postgres schema to index and search large-scale STAC
                                     collections.
@@ -128,7 +128,7 @@ <h3>
                                 Make it Discoverable
                             </h3>
                             <h5>
-                                stac-fastapi
+                                stac-fastapi - REST API Service
                             </h5>
                             <p>stac-fastapi is an Open Geospatial Consortium (OGC) Features API compliant FastAPI
                                 application for STAC metadata search.
@@ -144,7 +144,7 @@ <h3>
                                 Visualize Raster Data
                             </h3>
                             <h5>
-                                titiler-pgstac
+                                titiler-pgstac - Raster Tiling Service
                             </h5>
                             <p>titiler-pgSTAC is a TiTiler extension that connects to pgSTAC to support large-scale
                                 dynamic mosaic tiling for visualizing STAC collections and items.
@@ -160,7 +160,7 @@ <h3>
                                 Visualize Vector Data
                             </h3>
                             <h5>
-                                tipg
+                                tipg - Vector Tiling Service
                             </h5>
                             <p>tipg is an Open Geospatial Consortium (OGC) Features and Tiles API for vector datasets.
                             </p>