docs(readme): grammatical fixes; http links to https (#122)

* docs(readme): grammatical fixes; http links to https

* docs(readme): remove duplicate line

README.md

@@ -12,7 +12,7 @@ When you build plugins for Fastify and you want that them to be accessible in th
 1. Use the `skip-override` hidden property
 2. Use this module
 
-__Note: the v2.x & v3.x series of this module covers Fastify v3. For Fastify v2 support refer to the v1.x series.__
+__Note: the v2.x & v3.x series of this module covers Fastify v3. For Fastify v2 support, refer to the v1.x series.__
 
 ## Usage
 `fastify-plugin` can do three things for you:
@@ -31,10 +31,10 @@ module.exports = fp(function (fastify, opts, next) {
 ```
 
 ## Metadata
-In addition if you use this module when creating new plugins, you can declare the dependencies, the name and the expected Fastify version that your plugin needs.
+In addition, if you use this module when creating new plugins, you can declare the dependencies, the name, and the expected Fastify version that your plugin needs.
 
 #### Fastify version
-If you need to set a bare-minimum version of Fastify for your plugin, just add the [semver](http://semver.org/) range that you need:
+If you need to set a bare-minimum version of Fastify for your plugin, just add the [semver](https://semver.org/) range that you need:
 ```js
 const fp = require('fastify-plugin')
 
@@ -49,7 +49,8 @@ If you need to check the Fastify version only, you can pass just the version str
 You can check [here](https://github.com/npm/node-semver#ranges) how to define a `semver` range.
 
 #### Name
-Fastify uses this option to validate dependency graph. On one hand it makes sure that no name collision occurs. On the other hand it makes possible to perform [dependency check](https://github.com/fastify/fastify-plugin#dependencies).
+Fastify uses this option to validate the dependency graph, allowing it to ensure that no name collisions occur and making it possible to perform [dependency checks](https://github.com/fastify/fastify-plugin#dependencies).
+
 ```js
 const fp = require('fastify-plugin')
 
@@ -65,7 +66,7 @@ module.exports = fp(plugin, {
 ```
 
 #### Dependencies
-You can also check if the `plugins` and `decorators` which your plugin intend to use are present in the dependency graph.
+You can also check if the `plugins` and `decorators` that your plugin intend to use are present in the dependency graph.
 > *Note:* This is the point where registering `name` of the plugins become important, because you can reference `plugin` dependencies by their [name](https://github.com/fastify/fastify-plugin#name).
 ```js
 const fp = require('fastify-plugin')
@@ -138,8 +139,8 @@ fp(async (fastify: FastifyInstance, options: FastifyPluginOptions): Promise<void
 ## Acknowledgements
 
 This project is kindly sponsored by:
-- [nearForm](http://nearform.com)
-- [LetzDoIt](http://www.letzdoitapp.com/)
+- [nearForm](https://nearform.com)
+- [LetzDoIt](https://www.letzdoitapp.com/)
 
 ## License