Fix a couple of typos and remove an unused constant.

Author: ro-tex

docs/rules/g104_unchecked_erros.md

@@ -3,7 +3,7 @@ id: g104
 title: G104: Audit errors not checked
 ---
 
-Really useful feature of Golang is the ability to return a tuple of a result and an error value from a function. There is an unspoken rule in Golang that the result of a function is unsafe until you make check the error value. Many security exploits can be performed when the error value is not checked.
+A really useful feature of Golang is the ability to return a tuple of a result and an error value from a function. There is an unspoken rule in Golang that the result of a function is unsafe until you make check the error value. Many security exploits can be performed when the error value is not checked.
 
 ## Example code:
 

docs/rules/g107_url_arg_to_http_request_as_taint_input.md

@@ -3,10 +3,10 @@ id: g107
 title: G107: Url provided to HTTP request as taint input
 ---
 
-Getting an URL from an untrusted source like user input gives the ability of an attacker to redirect your application to bad websites and perform additional attacks.
+Getting a URL from an untrusted source like user input gives the ability of an attacker to redirect your application to bad websites and perform additional attacks.
 One of the examples is as shown below the [http.Get()](https://golang.org/pkg/net/http/#Client.Get) function issues a GET to the specified URL and if the result is appropriate GET will follow the redirect after calling Client's CheckRedirect function. That means that the attacker can send your application to various places.
 
-This problem can be used to achieve [SSRF](https://www.acunetix.com/blog/articles/server-side-request-forgery-vulnerability/) atttacks via http requests with variable url.
+This problem can be used to achieve [SSRF](https://www.acunetix.com/blog/articles/server-side-request-forgery-vulnerability/) attacks via http requests with variable url.
 
 ## Example problematic code:
 

website/core/Footer.js

@@ -19,7 +19,6 @@ class Footer extends React.Component {
   }
 
   render() {
-    const currentYear = new Date().getFullYear();
     return (
       <footer className="nav-footer" id="footer">
         <section className="sitemap">