Fix s2geo documentation and code to reflect current plugin name

plugins/processors/s2geo/README.md

@@ -7,16 +7,17 @@ The `lat` and `lon` fields values should contain WGS-84 coordinates in decimal d
 ### Configuration
 
 ```toml
-[[processors.geo]]
-  ## The name of the lat and lon fields containing WGS-84 latitude and longitude in decimal degrees
-  lat_field = "lat"
-  lon_field = "lon"
+[[processors.s2geo]]
+  ## The name of the lat and lon fields containing WGS-84 latitude and
+  ## longitude in decimal degrees.
+  # lat_field = "lat"
+  # lon_field = "lon"
 
   ## New tag to create
-  tag_key = "s2_cell_id"
+  # tag_key = "s2_cell_id"
 
   ## Cell level (see https://s2geometry.io/resources/s2cell_statistics.html)
-  cell_level = 11
+  # cell_level = 9
 ```
 
 ### Example

plugins/processors/s2geo/s2geo.go

@@ -2,6 +2,7 @@ package geo
 
 import (
 	"fmt"
+
 	"github.com/golang/geo/s2"
 	"github.com/influxdata/telegraf"
 	"github.com/influxdata/telegraf/plugins/processors"
@@ -15,15 +16,16 @@ type Geo struct {
 }
 
 var SampleConfig = `
-  ## The name of the lat and lon fields containing WGS-84 latitude and longitude in decimal degrees
-  lat_field = "lat"
-  lon_field = "lon"
+  ## The name of the lat and lon fields containing WGS-84 latitude and
+  ## longitude in decimal degrees.
+  # lat_field = "lat"
+  # lon_field = "lon"
 
   ## New tag to create
-  tag_key = "s2_cell_id"
+  # tag_key = "s2_cell_id"
 
   ## Cell level (see https://s2geometry.io/resources/s2cell_statistics.html)
-  cell_level = 9
+  # cell_level = 9
 `
 
 func (g *Geo) SampleConfig() string {
@@ -31,7 +33,7 @@ func (g *Geo) SampleConfig() string {
 }
 
 func (g *Geo) Description() string {
-	return "Reads latitude and longitude fields and adds tag with with S2 cell ID token of specified level."
+	return "Add the S2 Cell ID as a tag based on latitude and longitude fields"
 }
 
 func (g *Geo) Init() error {