doc: fix guaranteed typo

PR-URL: #62374
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Aviv Keller <me@aviv.sh>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: lilianakatrina684-a11y

doc/api/cli.md

@@ -4070,7 +4070,7 @@ that run in libuv's threadpool will experience degraded performance. In order to
 mitigate this issue, one potential solution is to increase the size of libuv's
 threadpool by setting the `'UV_THREADPOOL_SIZE'` environment variable to a value
 greater than `4` (its current default value). However, setting this from inside
-the process using `process.env.UV_THREADPOOL_SIZE=size` is not guranteed to work
+the process using `process.env.UV_THREADPOOL_SIZE=size` is not guaranteed to work
 as the threadpool would have been created as part of the runtime initialisation
 much before user code is run. For more information, see the [libuv threadpool documentation][].
 

doc/node.1

@@ -2293,7 +2293,7 @@ that run in libuv's threadpool will experience degraded performance. In order to
 mitigate this issue, one potential solution is to increase the size of libuv's
 threadpool by setting the \fB'UV_THREADPOOL_SIZE'\fR environment variable to a value
 greater than \fB4\fR (its current default value). However, setting this from inside
-the process using \fBprocess.env.UV_THREADPOOL_SIZE=size\fR is not guranteed to work
+the process using \fBprocess.env.UV_THREADPOOL_SIZE=size\fR is not guaranteed to work
 as the threadpool would have been created as part of the runtime initialisation
 much before user code is run. For more information, see the libuv threadpool documentation.
 .