Fix GNU Make, Rails and Terraform get_latest_version

lib/docs/scrapers/gnu_make.rb

@@ -26,7 +26,7 @@ module Docs
     HTML
 
     def get_latest_version(opts)
-      body = fetch(self.base_url, opts)
+      body = fetch("https://www.gnu.org/software/make/manual/html_node/", opts)
       body.scan(/version \d*\.?\d*/)[0].sub('version', '')
     end
 

lib/docs/scrapers/rdoc/rails.rb

@@ -117,7 +117,8 @@ module Docs
 
     def get_latest_version(opts)
       doc = fetch_doc('https://rubyonrails.org/', opts)
-      doc.at_css('.version p a').content.scan(/\d\.\d*\.*\d*\.*\d*/)[0]
+      doc
+      doc.at_css('.heading__button span').content.scan(/\d\.\d*\.*\d*\.*\d*/)[0]
     end
   end
 end

lib/docs/scrapers/terraform.rb

@@ -20,8 +20,8 @@ module Docs
     HTML
 
     def get_latest_version(opts)
-      contents = get_github_file_contents('hashicorp', 'terraform-website', 'content/config.rb', opts)
-      contents.scan(/version\s+=\s+"([0-9.]+)"/)[0][0]
+      contents = get_latest_github_release('hashicorp', 'terraform', opts)
+      contents.sub("v", "")
     end
   end
 end