Update branch name in comments

Author: MattiasBuelens

lib/ours/errors.js

@@ -6,7 +6,7 @@ const { AggregateError: CustomAggregateError } = require('./primordials')
 /*
   This file is a reduced and adapted version of the main lib/internal/errors.js file defined at
 
-  https://github.com/nodejs/node/blob/master/lib/internal/errors.js
+  https://github.com/nodejs/node/blob/main/lib/internal/errors.js
 
   Don't try to replace with the original file and keep it up to date (starting from E(...) definitions)
   with the upstream file.

lib/ours/primordials.js

@@ -3,7 +3,7 @@
 /*
   This file is a reduced and adapted version of the main lib/internal/per_context/primordials.js file defined at
 
-  https://github.com/nodejs/node/blob/master/lib/internal/per_context/primordials.js
+  https://github.com/nodejs/node/blob/main/lib/internal/per_context/primordials.js
 
   Don't try to replace with the original file and keep it up to date with the upstream file.
 */

src/errors.js

@@ -6,7 +6,7 @@ const { AggregateError: CustomAggregateError } = require('./primordials')
 /*
   This file is a reduced and adapted version of the main lib/internal/errors.js file defined at
 
-  https://github.com/nodejs/node/blob/master/lib/internal/errors.js
+  https://github.com/nodejs/node/blob/main/lib/internal/errors.js
 
   Don't try to replace with the original file and keep it up to date (starting from E(...) definitions)
   with the upstream file.

src/primordials.js

@@ -3,7 +3,7 @@
 /*
   This file is a reduced and adapted version of the main lib/internal/per_context/primordials.js file defined at
 
-  https://github.com/nodejs/node/blob/master/lib/internal/per_context/primordials.js
+  https://github.com/nodejs/node/blob/main/lib/internal/per_context/primordials.js
 
   Don't try to replace with the original file and keep it up to date with the upstream file.
 */