Update a example comparison between ST_InteriorRingN and ST_ExteriorRing

Conflicts:

	docs/dev/ST_ExteriorRing.md
Update comparison example ST_ExteriorRing - ST_InteriorRingN
Update image for comparison between ST_ExteriorRing and ST_InteriorRingN
Update the comparison of example for ST_ExteriorRing and ST_InteriorRingN
Update ST_InteriorRingN.svg
Merge remote-tracking branch 'mireille/comparison_int_ext' into m-110
Merge remote-tracking branch 'mireille/interiorring' into m-110