Give an explicit example of hover on V4 component.

Author: cristianoc

analysis/tests/src/Hover.res

@@ -186,3 +186,14 @@ module TypeSubstitutionRecords = {
   // y2.content.
   //            ^com
 }
+
+module CompV4 = {
+  type props<'n, 's> = {n?: 'n, s: 's}
+  let make = props => {
+    let _ = props.n == Some (10)
+    React.string(props.s)
+  }
+}
+
+let mk = CompV4.make
+//  ^hov

analysis/tests/src/expected/Hover.res.txt

@@ -158,3 +158,6 @@ Completable: Cpath Value[y2].content.""
     "documentation": null
   }]
 
+Hover src/Hover.res 197:4
+{"contents": "```rescript\nCompV4.props<int, string> => React.element\n```\n\n```rescript\ntype props<'n, 's> = {n: option<'n>, s: 's}\n```\n\n```rescript\ntype element\n```"}
+