doc: fixup wording

Co-Authored-By: GeoffreyBooth <[email protected]>

Author: ljharb

doc/api/cli.md

@@ -540,7 +540,7 @@ that dynamic `import()` expressions are different from `import` statements;
 `export` statements are found, the initial entry point is interpreted as
 CommonJS.
 
-The `--type` flag may also be used with `--eval`, `--print` or `STDIN`.
+The `--type` flag may also be used with `--eval`, `--print`, or `STDIN`.
 
 ### `--use-bundled-ca`, `--use-openssl-ca`
 <!-- YAML

lib/internal/errors.js

@@ -816,7 +816,7 @@ E('ERR_INVALID_SYNC_FORK_INPUT',
 E('ERR_INVALID_THIS', 'Value of "this" must be of type %s', TypeError);
 E('ERR_INVALID_TUPLE', '%s must be an iterable %s tuple', TypeError);
 E('ERR_INVALID_TYPE_FLAG',
-  'Type flag must be one of "auto", "commonjs", "module". Received --type=%s',
+  'Type flag must be one of "auto", "commonjs", or "module". Received --type=%s',
   TypeError);
 E('ERR_INVALID_URI', 'URI malformed', URIError);
 E('ERR_INVALID_URL', 'Invalid URL: %s', TypeError);