doc: clarify --max-old-space-size and --max-semi-space-size units

PR-URL: #54477
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Ulises Gascón <ulisesgascongonzalez@gmail.com>

doc/api/cli.md

@@ -3213,7 +3213,11 @@ documented here:
 
 ### `--perf-prof-unwinding-info`
 
-### `--max-old-space-size=SIZE` (in megabytes)
+<!-- Anchor to make sure old links find a target -->
+
+<a id="--max-old-space-sizesize-in-megabytes"></a>
+
+### `--max-old-space-size=SIZE` (in MiB)
 
 Sets the max memory size of V8's old memory section. As memory
 consumption approaches the limit, V8 will spend more time on
@@ -3226,10 +3230,14 @@ On a machine with 2 GiB of memory, consider setting this to
 node --max-old-space-size=1536 index.js
 ```
 
-### `--max-semi-space-size=SIZE` (in megabytes)
+<!-- Anchor to make sure old links find a target -->
+
+<a id="--max-semi-space-sizesize-in-megabytes"></a>
+
+### `--max-semi-space-size=SIZE` (in MiB)
 
 Sets the maximum [semi-space][] size for V8's [scavenge garbage collector][] in
-MiB (megabytes).
+MiB (mebibytes).
 Increasing the max size of a semi-space may improve throughput for Node.js at
 the cost of more memory consumption.
 

doc/api/worker_threads.md

@@ -1354,8 +1354,8 @@ thread spawned will spawn another until the application crashes.
 [`'close'` event]: #event-close
 [`'exit'` event]: #event-exit
 [`'online'` event]: #event-online
-[`--max-old-space-size`]: cli.md#--max-old-space-sizesize-in-megabytes
-[`--max-semi-space-size`]: cli.md#--max-semi-space-sizesize-in-megabytes
+[`--max-old-space-size`]: cli.md#--max-old-space-sizesize-in-mib
+[`--max-semi-space-size`]: cli.md#--max-semi-space-sizesize-in-mib
 [`ArrayBuffer`]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer
 [`AsyncResource`]: async_hooks.md#class-asyncresource
 [`Buffer.allocUnsafe()`]: buffer.md#static-method-bufferallocunsafesize