Update 0200-12-28-comecando-com-o-JOSM.md

fix broken link #263
Update 0200-12-29-GettingStartedWithJOSM.md

fix broken link #263
Update 0200-12-28-start-josm.md

fix broken link #263
Merge pull request #267 from althio/patch-sample.osm

Patch sample.osm