Apply suggestions from code review

Co-authored-by: Craig Norris <112565517+cnorris-cs@users.noreply.github.com>
Signed-off-by: esmerel <6818907+esmerel@users.noreply.github.com>

Author: esmerel

pipeline/filters/nest.md

@@ -1,9 +1,9 @@
 # Nest
 
-The _Nest Filter_ plugin lets you operate on or with nested data. Its modes of operation are
+The _Nest Filter_ plugin lets you operate on or with nested data. Its modes of operation are:
 
-- `nest` - Take a set of records and place them in a map
-- `lift` - Take a map by key and lift its records up
+- `nest` - Take a set of records and place them in a map.
+- `lift` - Take a map by key and lift its records up.
 
 ## Example usage for `nest`