Update examples/projections/cyl/cyl_oblique_mercator_1.py

Co-authored-by: Dongdong Tian <seisman.info@gmail.com>

Author: eemcmullan

examples/projections/cyl/cyl_oblique_mercator_1.py

@@ -21,7 +21,7 @@
 fig = pygmt.Figure()
 # Using the origin and azimuth
 fig.coast(
-    projection="Oa-120/25/-30/12c+v",
+    projection="Oa-120/25/-30/6c+v",
     # Set bottom left and top right coordinates of the figure with "+r"
     region="-122/35/-107/22+r",
     frame="afg",