[DOCS] Fix typo (#73137) (#73150)

Co-authored-by: Ernesto Reig <ernesto.reig@gmail.com>

x-pack/docs/en/rest-api/watcher/get-watch.asciidoc

@@ -43,7 +43,7 @@ this API. For more information, see
 [[watcher-api-get-watch-example]]
 ==== {api-examples-title}
 
-The following example gets a watch with `my-watch` id:
+The following example gets a watch with `my_watch` id:
 
 [source,console]
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