Update documentation/how-to/gnss.en.md

Co-authored-by: Matthias Kuhn <matthias@opengis.ch>
opengisch · Jun 3, 2024 · beb6c20 · beb6c20
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commit beb6c20
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/documentation/how-to/gnss.en.md b/documentation/how-to/gnss.en.md
@@ -86,7 +86,7 @@ For the transformation from ETRS89 (reference ellipsoid GPS) to NAP (Dutch) user
 the file [nlgeo2018.gtx from NSGI](https://www.nsgi.nl/rdnaptrans) and put it in the directory.
 
 To obtain precise altitude data for Cadastral Surveying in Switzerland, users can access the file correction of the vertical grid shift through [Geoid OGD from Swisstopo](https://cms.geo.admin.ch/ogd/geodesy/Geoid_OGD.zip).
-Following the download, users are advised to perform a conversion of the file labeled `chgeo04_htrans_lv95.arg` to `chgeo04_htrans_lv95.gtx`.
+Following the download, users are advised to perform a conversion of the file labeled `chgeo04_htrans_lv95.agr` to `chgeo04_htrans_lv95.gtx`.
 
 ## Usage
 :material-tablet: Fieldwork