add wiki link to osm2psql README

diff --git a/docs/admin/Installation.md b/docs/admin/Installation.md
index d07249276177c8413bc8dd48c584929ba6dd068a..88a58b9100dedb28aa9b9f9348ef8457f8a7deec 100644 (file)
--- a/docs/admin/Installation.md
+++ b/docs/admin/Installation.md
@@ -29,7 +29,8 @@ For compiling:
   * a recent C++ compiler
 
 Nominatim comes with its own version of osm2pgsql. See the
-osm2pgsql README for additional dependencies required for compiling osm2pgsql.
+[osm2pgsql README](https://github.com/openstreetmap/osm2pgsql/blob/master/README.md#building)
+for additional dependencies required for compiling osm2pgsql.
 
 For running tests: