docs: cosmetic tweaks to tutorials

tutorial/README.md

@@ -20,11 +20,11 @@ When configuring js-coding-standards, please keep the following in mind:
   > In other words, if you decide to include ie. `@strv/javascript/environments/nodejs/optional`, include it **after** you have included `@strv/javascript/environments/nodejs/v8`.
 
 - Some rules are **meant** to be disabled, but only for some folders/files
-  > For example, the rule `no-process-env` is enabled by default because accessing any any property on `process.env` object causes an expensive C-level function call. However, using `process.env` is the recommended way to manage application configuration. Therefore, some configuration files disable this rule for all files located in a directory named _config_ or _configuration_. Here, you gather all the required configuration options from `process.env` and export them in a module. The rest of your application no longer needs to access `process.env` directly and instead reads the configuration from that module.
+  > For example, the rule `no-process-env` is enabled by default because accessing any property on `process.env` object causes an expensive C-level function call. However, using `process.env` is the recommended way to manage application configuration. Therefore, some configuration files disable this rule for all files located in a directory named _config_ or _configuration_. Here, you gather all the required configuration options from `process.env` and export them in a module. The rest of your application no longer needs to access `process.env` directly and instead reads the configuration from that module.
 
 - Always consider re-configuring a rule rather than disabling it completely
   > If a rule does not quite fit your exiting codebase and fixing the issues would take considerable amount of time/energy, please consider first if the rule could be re-configured to suit your project's current style, rather than disabling it right away.
 
-# Example configuration files
+## Example configuration files
 
 Some example configuration files have been prepared for you to look at / add to your project right away. Look for them in this directory!

tutorial/nodejs-eslintrc.js

@@ -4,7 +4,7 @@
 // directory, or a subdirectory if your project consists of both node.js and browser code.
 module.exports = {
   extends: [
-    '@strv/javascript/environments/nodejs/v8',
+    '@strv/javascript/environments/nodejs/v10',
     '@strv/javascript/environments/nodejs/optional',
     '@strv/javascript/coding-styles/recommended',
   ],
@@ -23,7 +23,7 @@ module.exports = {
     },
 
     rules: {
-      'func-names': 0,
+      'func-names': 'off',
     },
   }],
 }

tutorial/react-eslintrc.js

@@ -4,7 +4,7 @@
 // directory, or a subdirectory if your project consists of both node.js and browser code.
 module.exports = {
   extends: [
-    '@strv/javascript/environments/react/v15',
+    '@strv/javascript/environments/react/v16',
     '@strv/javascript/environments/react/optional',
     '@strv/javascript/coding-styles/recommended',
   ],