Explain coordinate system mismatch

[mneilson-usgs]

Add section to explain the mismatch between plot CRS and graticule CRS, and provide example on how to use CRS of first geom_sf() object to draw plot graticule

Closes #288

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🔍 Inspect the changes: https://github.com/datacarpentry/r-raster-vector-geospatial/compare/md-outputs..md-outputs-PR-491

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 06-vector-open-shapefile-in-r.md | 9 +++++++++
 md5sum.txt                       | 2 +-
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⏱️ Updated at 2025-08-12 20:56:59 +0000