Update logfmt.md

Signed-off-by: Luke Kuzmish <42181698+cosmastech@users.noreply.github.com>

Author: cosmastech

docs/plugins/fluentbit/parser/logfmt.md

@@ -0,0 +1,10 @@
+# Logfmt
+
+The logfmt parser plugin.
+
+
+| Field | Description | Scheme |
+| ----- | ----------- | ------ |
+| timeKey | Time_Key | string |
+| timeFormat | Time_Format, eg. %Y-%m-%dT%H:%M:%S %z | string |
+| timeKeep | Time_Keep | *bool |