geospatial indexes review edits
theme: cleanup unused macros fixing header.
DOCS-900 near sort order
Update source/reference/command/collMod.txt
merge: DOCS-958
DOCS-959 minor copy edits
Minor typo
Update source/core/sharding.txt

typo
minor typo
DOCS-962 remove a comma
merge: typo fixes
merge: DOCS-959
merge: DOCS-900
merge: geo edits
Grammar fix