[DOCS] Clarify phrase suggester docs smoothing parameter
Closes
@@ -269,7 +269,10 @@ POST _search
The `phrase` suggester supports multiple smoothing models to balance
weight between infrequent grams (grams (shingles) are not existing in
-the index) and frequent grams (appear at least once in the index).
+the index) and frequent grams (appear at least once in the index). The
+smoothing model can be selected by setting the `smoothing` parameter
+to one of the following options. Each smoothing model supports specific
+properties that can be configured.
[horizontal]
`stupid_backoff`::
@@ -290,6 +293,28 @@ the index) and frequent grams (appear at least once in the index).
All parameters (`trigram_lambda`, `bigram_lambda`, `unigram_lambda`)
must be supplied.
+[source,js]
+--------------------------------------------------
+POST _search
+{
+ "suggest": {
+ "text" : "obel prize",
+ "simple_phrase" : {
+ "phrase" : {
+ "field" : "title.trigram",
+ "size" : 1,
+ "smoothing" : {
+ "laplace" : {
+ "alpha" : 0.7
+ }
+ }
+ }
+ }
+ }
+}
+--------------------------------------------------
+// CONSOLE
+
==== Candidate Generators
The `phrase` suggester uses candidate generators to produce a list of
