[Docs] Including leading slash in range query doc example URLs (elastic#51277)

Author: russcam

docs/reference/query-dsl/range-query.asciidoc

@@ -14,7 +14,7 @@ between `10` and `20`.
 
 [source,console]
 ----
-GET _search
+GET /_search
 {
     "query": {
         "range" : {
@@ -150,7 +150,7 @@ contains a date between today and yesterday.
 
 [source,console]
 ----
-GET _search
+GET /_search
 {
     "query": {
         "range" : {
@@ -212,7 +212,7 @@ UTC offset. For example:
 
 [source,console]
 ----
-GET _search
+GET /_search
 {
   "query": {
     "range": {
@@ -230,4 +230,4 @@ GET _search
 <1> Indicates that `date` values use a UTC offset of `+01:00`.
 <2> With a UTC offset of `+01:00`, {es} converts this date to
 `2019-12-31T23:00:00 UTC`.
-<3> The `time_zone` parameter does not affect the `now` value.
+<3> The `time_zone` parameter does not affect the `now` value.