[DOCS] Escape commas in deprecated[] for Asciidoctor migration
@@ -73,7 +73,7 @@ have a higher score than words that originated in the `content` field.
This functionality comes at a cost: queries on the `_all` field are slower
when field boosting is used.
-deprecated[5.0.0, index time boost is deprecated. Instead, the field mapping boost is applied at query time. For indices created before 5.0.0 the boost will still be applied at index time.]
+deprecated[5.0.0, "index time boost is deprecated. Instead, the field mapping boost is applied at query time. For indices created before 5.0.0 the boost will still be applied at index time."]
[WARNING]
.Why index time boosting is a bad idea
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