Make docs for webview.findInPage and webContents.findInPage consistent

docs/api/webview-tag.md

@@ -511,14 +511,14 @@ Inserts `text` to the focused element.
 
 * `text` String - Content to be searched, must not be empty.
 * `options` Object (optional)
-  * `forward` Boolean - Whether to search forward or backward, defaults to `true`.
-  * `findNext` Boolean - Whether the operation is first request or a follow up,
+  * `forward` Boolean - (optional) Whether to search forward or backward, defaults to `true`.
+  * `findNext` Boolean - (optional) Whether the operation is first request or a follow up,
     defaults to `false`.
-  * `matchCase` Boolean - Whether search should be case-sensitive,
+  * `matchCase` Boolean - (optional) Whether search should be case-sensitive,
     defaults to `false`.
-  * `wordStart` Boolean - Whether to look only at the start of words.
+  * `wordStart` Boolean - (optional) Whether to look only at the start of words.
     defaults to `false`.
-  * `medialCapitalAsWordStart` Boolean - When combined with `wordStart`,
+  * `medialCapitalAsWordStart` Boolean - (optional) When combined with `wordStart`,
     accepts a match in the middle of a word if the match begins with an
     uppercase letter followed by a lowercase or non-letter.
     Accepts several other intra-word matches, defaults to `false`.