doc: minor edit to DEP0065

Use "Node.js 6.0.0" instead of "Node.js v6.0.0". (We decided to drop "v"
before version numbers to avoid confusion with the V8 JavaScript
engine.)

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

@@ -569,7 +569,7 @@ Type: End-of-Life
 
 The `repl` module's `REPL_MODE_MAGIC` constant, used for `replMode` option, has
 been removed. Its behavior has been functionally identical to that of
-`REPL_MODE_SLOPPY` since Node.js v6.0.0, when V8 5.0 was imported. Please use
+`REPL_MODE_SLOPPY` since Node.js 6.0.0, when V8 5.0 was imported. Please use
 `REPL_MODE_SLOPPY` instead.
 
 The `NODE_REPL_MODE` environment variable is used to set the underlying