doc: indicate the format of process.version

dguo · Trott · commit 0dae5d938094 · 2020-08-24T07:42:46.000-07:00
PR-URL: #34872 Reviewed-By: Richard Lau <riclau@uk.ibm.com> Reviewed-By: Rich Trott <rtrott@gmail.com>
diff --git a/doc/api/process.md b/doc/api/process.md
@@ -2498,7 +2498,8 @@ added: v0.1.3
 
 * {string}
 
-The `process.version` property returns the Node.js version string.
+The `process.version` property returns the Node.js version string in the form of
+`v<major>.<minor>.<patch>`.
 
 ```js
 console.log(`Version: ${process.version}`);
