fix docker image reference

Author: lovasoa

examples/make a geographic data application using sqlite extensions/Dockerfile

@@ -1,6 +1,6 @@
 FROM debian:stable-slim
 
-COPY --from=sqlpage/SQLPage:main /usr/local/bin/sqlpage /usr/local/bin/sqlpage
+COPY --from=lovasoa/sqlpage:main /usr/local/bin/sqlpage /usr/local/bin/sqlpage
 
 RUN apt-get update && \
     apt-get -y install libsqlite3-mod-spatialite