update version

Author: JanCaha

website/pages/index.md

@@ -42,14 +42,14 @@ There can be two special rows in the table with values of __Distance (meters)__
 The citation for the plugin should be:
 
 ```
-Jan Caha (2023). LoS Tools. QGIS Plugin version 1.0. https://jancaha.github.io/qgis_los_tools/
+Jan Caha (2026). LoS Tools. QGIS Plugin version 1.3. https://jancaha.github.io/qgis_los_tools/
 ```
 
 ```
 @Manual{,
-  title = {LoS Tools}. QGIS Plugin version 1.0,
+  title = {LoS Tools}. QGIS Plugin version 1.3,
   author = {Jan Caha},
-  year = {2023},
+  year = {2026},
   url = {https://jancaha.github.io/qgis_los_tools/}
 }
 ```