doc: use console.error for error case in fs, https, net and process

console.error is more suitable than console.log for error case.

PR-URL: nodejs#45606
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Kohei Ueno <kohei.ueno119@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Paolo Insogna <paolo@cowtech.it>

Author: deokjinkim

doc/api/fs.md

@@ -941,15 +941,15 @@ try {
   await copyFile('source.txt', 'destination.txt');
   console.log('source.txt was copied to destination.txt');
 } catch {
-  console.log('The file could not be copied');
+  console.error('The file could not be copied');
 }
 
 // By using COPYFILE_EXCL, the operation will fail if destination.txt exists.
 try {
   await copyFile('source.txt', 'destination.txt', constants.COPYFILE_EXCL);
   console.log('source.txt was copied to destination.txt');
 } catch {
-  console.log('The file could not be copied');
+  console.error('The file could not be copied');
 }
 ```
 

doc/api/https.md

@@ -24,7 +24,7 @@ let https;
 try {
   https = require('node:https');
 } catch (err) {
-  console.log('https support is disabled!');
+  console.error('https support is disabled!');
 }
 ```
 
@@ -42,7 +42,7 @@ let https;
 try {
   https = await import('node:https');
 } catch (err) {
-  console.log('https support is disabled!');
+  console.error('https support is disabled!');
 }
 ```
 

doc/api/net.md

@@ -409,7 +409,7 @@ after a certain amount of time:
 ```js
 server.on('error', (e) => {
   if (e.code === 'EADDRINUSE') {
-    console.log('Address in use, retrying...');
+    console.error('Address in use, retrying...');
     setTimeout(() => {
       server.close();
       server.listen(PORT, HOST);

doc/api/process.md

@@ -3198,7 +3198,7 @@ if (process.getegid && process.setegid) {
     process.setegid(501);
     console.log(`New gid: ${process.getegid()}`);
   } catch (err) {
-    console.log(`Failed to set gid: ${err}`);
+    console.error(`Failed to set gid: ${err}`);
   }
 }
 ```
@@ -3212,7 +3212,7 @@ if (process.getegid && process.setegid) {
     process.setegid(501);
     console.log(`New gid: ${process.getegid()}`);
   } catch (err) {
-    console.log(`Failed to set gid: ${err}`);
+    console.error(`Failed to set gid: ${err}`);
   }
 }
 ```
@@ -3243,7 +3243,7 @@ if (process.geteuid && process.seteuid) {
     process.seteuid(501);
     console.log(`New uid: ${process.geteuid()}`);
   } catch (err) {
-    console.log(`Failed to set uid: ${err}`);
+    console.error(`Failed to set uid: ${err}`);
   }
 }
 ```
@@ -3257,7 +3257,7 @@ if (process.geteuid && process.seteuid) {
     process.seteuid(501);
     console.log(`New uid: ${process.geteuid()}`);
   } catch (err) {
-    console.log(`Failed to set uid: ${err}`);
+    console.error(`Failed to set uid: ${err}`);
   }
 }
 ```
@@ -3288,7 +3288,7 @@ if (process.getgid && process.setgid) {
     process.setgid(501);
     console.log(`New gid: ${process.getgid()}`);
   } catch (err) {
-    console.log(`Failed to set gid: ${err}`);
+    console.error(`Failed to set gid: ${err}`);
   }
 }
 ```
@@ -3302,7 +3302,7 @@ if (process.getgid && process.setgid) {
     process.setgid(501);
     console.log(`New gid: ${process.getgid()}`);
   } catch (err) {
-    console.log(`Failed to set gid: ${err}`);
+    console.error(`Failed to set gid: ${err}`);
   }
 }
 ```
@@ -3333,7 +3333,7 @@ if (process.getgroups && process.setgroups) {
     process.setgroups([501]);
     console.log(process.getgroups()); // new groups
   } catch (err) {
-    console.log(`Failed to set groups: ${err}`);
+    console.error(`Failed to set groups: ${err}`);
   }
 }
 ```
@@ -3346,7 +3346,7 @@ if (process.getgroups && process.setgroups) {
     process.setgroups([501]);
     console.log(process.getgroups()); // new groups
   } catch (err) {
-    console.log(`Failed to set groups: ${err}`);
+    console.error(`Failed to set groups: ${err}`);
   }
 }
 ```
@@ -3377,7 +3377,7 @@ if (process.getuid && process.setuid) {
     process.setuid(501);
     console.log(`New uid: ${process.getuid()}`);
   } catch (err) {
-    console.log(`Failed to set uid: ${err}`);
+    console.error(`Failed to set uid: ${err}`);
   }
 }
 ```
@@ -3391,7 +3391,7 @@ if (process.getuid && process.setuid) {
     process.setuid(501);
     console.log(`New uid: ${process.getuid()}`);
   } catch (err) {
-    console.log(`Failed to set uid: ${err}`);
+    console.error(`Failed to set uid: ${err}`);
   }
 }
 ```