doc: add 'v' prefix to all versions in metadata

PR-URL: https://github.com/nodejs/node/pull/19590
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

doc/api/buffer.md

@@ -2534,7 +2534,7 @@ console.log(buf);
 
 ## Buffer Constants
 <!-- YAML
-added: 8.2.0
+added: v8.2.0
 -->
 
 Note that `buffer.constants` is a property on the `buffer` module returned by
@@ -2542,7 +2542,7 @@ Note that `buffer.constants` is a property on the `buffer` module returned by
 
 ### buffer.constants.MAX_LENGTH
 <!-- YAML
-added: 8.2.0
+added: v8.2.0
 -->
 
 * {integer} The largest size allowed for a single `Buffer` instance.
@@ -2554,7 +2554,7 @@ This value is also available as [`buffer.kMaxLength`][].
 
 ### buffer.constants.MAX_STRING_LENGTH
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-added: 8.2.0
+added: v8.2.0
 -->
 
 * {integer} The largest length allowed for a single `string` instance.

doc/api/cluster.md

@@ -704,7 +704,7 @@ changes:
   - version: v9.4.0
     pr-url: https://github.com/nodejs/node/pull/17412
     description: The `windowsHide` option is supported now.
-  - version: 8.2.0
+  - version: v8.2.0
     pr-url: https://github.com/nodejs/node/pull/14140
     description: The `inspectPort` option is supported now.
   - version: v6.4.0

doc/api/console.md

@@ -241,7 +241,7 @@ undefined
 <!-- YAML
 added: v8.0.0
 changes:
-  - version: 9.3.0
+  - version: v9.3.0
     pr-url: https://github.com/nodejs/node/pull/17033
     description: "`console.debug` is now an alias for `console.log`."
 -->
@@ -280,7 +280,7 @@ Defaults to `false`. Colors are customizable; see
 <!-- YAML
 added: v8.0.0
 changes:
-  - version: 9.3.0
+  - version: v9.3.0
     pr-url: https://github.com/nodejs/node/pull/17152
     description: "`console.dirxml` now calls `console.log` for its arguments."
 -->

doc/api/fs.md

@@ -366,7 +366,7 @@ Emitted when the `fs.ReadStream`'s file descriptor has been opened.
 
 ### readStream.bytesRead
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-added: 6.4.0
+added: v6.4.0
 -->
 
 * Value: {number}

doc/api/process.md

@@ -468,7 +468,7 @@ Would generate the output:
 
 ## process.argv0
 <!-- YAML
-added: 6.4.0
+added: v6.4.0
 -->
 
 * {string}
@@ -694,7 +694,7 @@ module.exports.foo();
 
 ## process.emitWarning(warning[, options])
 <!-- YAML
-added: 8.0.0
+added: v8.0.0
 -->
 
 * `warning` {string|Error} The warning to emit.