docs: elasticsearch and influxdb docs for group by time interval option (#11609)

public/app/plugins/datasource/elasticsearch/partials/config.html

@@ -35,7 +35,7 @@
     </div>
 	<div class="gf-form-inline">
 		<div class="gf-form">
-			<span class="gf-form-label width-9">Min interval</span>
+			<span class="gf-form-label width-9">Min time interval</span>
 			<input type="text" class="gf-form-input width-6" ng-model="ctrl.current.jsonData.timeInterval" spellcheck='false' placeholder="10s"></input>
 			<info-popover mode="right-absolute">
 				A lower limit for the auto group by time interval. Recommended to be set to write frequency,

public/app/plugins/datasource/influxdb/query_help.md

@@ -10,7 +10,7 @@
 - When stacking is enabled it is important that points align
 - If there are missing points for one series it can cause gaps or missing bars
 - You must use fill(0), and select a group by time low limit
-- Use the group by time option below your queries and specify for example >10s if your metrics are written every 10 seconds
+- Use the group by time option below your queries and specify for example 10s if your metrics are written every 10 seconds
 - This will insert zeros for series that are missing measurements and will make stacking work properly
 
 #### Group by time
@@ -18,8 +18,7 @@
 - Leave the group by time field empty for each query and it will be calculated based on time range and pixel width of the graph
 - If you use fill(0) or fill(null) set a low limit for the auto group by time interval
 - The low limit can only be set in the group by time option below your queries
-- You set a low limit by adding a greater sign before the interval
-- Example: >60s if you write metrics to InfluxDB every 60 seconds
+- Example: 60s if you write metrics to InfluxDB every 60 seconds
 
 #### Documentation links: