(docs/fix): fix ToC changes / bugs introduced in jaredpalmer#307

- __DEV__ link stopped working
- Contributors link didn't work

- backtick formatting was removed

- this was all re-generated by using `npx doctoc README.md`
  - doctoc is specified to be used in the ToC comments

README.md

@@ -9,18 +9,18 @@ Despite all the recent hype, setting up a new TypeScript (x React) library can b
 
 - [Features](#features)
 - [Quick Start](#quick-start)
-  - [npm start or yarn start](#npm-start-or-yarn-start)
-  - [npm run build or yarn build](#npm-run-build-or-yarn-build)
-  - [npm test or yarn test](#npm-test-or-yarn-test)
-  - [npm run lint or yarn lint](#npm-run-lint-or-yarn-lint)
-  - [prepare script](#prepare-script)
+  - [`npm start` or `yarn start`](#npm-start-or-yarn-start)
+  - [`npm run build` or `yarn build`](#npm-run-build-or-yarn-build)
+  - [`npm test` or `yarn test`](#npm-test-or-yarn-test)
+  - [`npm run lint` or `yarn lint`](#npm-run-lint-or-yarn-lint)
+  - [`prepare` script](#prepare-script)
 - [Optimizations](#optimizations)
   - [Development-only Expressions + Treeshaking](#development-only-expressions--treeshaking)
     - [Rollup Treeshaking](#rollup-treeshaking)
-    - [Advanced babel-plugin-dev-expressions](#advanced-babel-plugin-dev-expressions)
-      - [__DEV__](#dev)
-      - [invariant](#invariant)
-      - [warning](#warning)
+    - [Advanced `babel-plugin-dev-expressions`](#advanced-babel-plugin-dev-expressions)
+      - [`__DEV__`](#__dev__)
+      - [`invariant`](#invariant)
+      - [`warning`](#warning)
   - [Using lodash](#using-lodash)
   - [Error extraction](#error-extraction)
 - [Customization](#customization)
@@ -30,13 +30,13 @@ Despite all the recent hype, setting up a new TypeScript (x React) library can b
 - [Inspiration](#inspiration)
   - [Comparison to Microbundle](#comparison-to-microbundle)
 - [API Reference](#api-reference)
-  - [tsdx watch](#tsdx-watch)
-  - [tsdx build](#tsdx-build)
-  - [tsdx test](#tsdx-test)
-  - [tsdx lint](#tsdx-lint)
+  - [`tsdx watch`](#tsdx-watch)
+  - [`tsdx build`](#tsdx-build)
+  - [`tsdx test`](#tsdx-test)
+  - [`tsdx lint`](#tsdx-lint)
 - [Author](#author)
 - [License](#license)
-- [Contributors ✨](#contributors-%e2%9c%a8)
+- [Contributors ✨](#contributors-)
 
 <!-- END doctoc generated TOC please keep comment here to allow auto update -->