typo

Author: jyutzler

ghpages/extensions.adoc

@@ -6,7 +6,7 @@ The following are GeoPackage extensions that have been discussed, reviewed, and
 
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-|**link:http://docs.opengeospatial.org/is/17-066r1/17-066r1.html[Tiled Gridded Coverage Data]** |The extension (previously titled "Elevation Extension") defines how to encode and store tiled regular gridded data, such as a digital elevation model, in a GeoPackage. **This document is currently under revision. The working vision is link:http://www.geopackage.org/spec/related-tables/[here].**
+|**link:http://docs.opengeospatial.org/is/17-066r1/17-066r1.html[Tiled Gridded Coverage Data]** |The extension (previously titled "Elevation Extension") defines how to encode and store tiled regular gridded data, such as a digital elevation model, in a GeoPackage. **This document is currently under revision. The working version is link:http://www.geopackage.org/spec/related-tables/[here].**
 | **http://docs.opengeospatial.org/is/18-000/18-000.html[Related Tables]** (see preface for template information) | This extension defines a mechanism for associating tables with existing GeoPackage feature or attribute tables. Among other things, related tables can be used to establish a many-to-many relationship between features and multimedia files. This extension was originally developed by OGC Member Compusult and was refined during an OGC Interoperability Experiment.
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