doc: fix text for DEP0085

Fix a typographical error in deprecation text. Convert run-on sentence
to two sentences (one in parentheses).

PR-URL: #20519
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

doc/api/deprecations.md

@@ -798,8 +798,8 @@ code modification is necessary if that is done.
 
 Type: End-of-Life
 
-The AsyncHooks Sensitive API was never documented and had various of minor
-issues, see https://github.com/nodejs/node/issues/15572. Use the `AsyncResource`
+The AsyncHooks Sensitive API was never documented and had various minor issues.
+(See https://github.com/nodejs/node/issues/15572.) Use the `AsyncResource`
 API instead.
 
 <a id="DEP0086"></a>