Update Ruby to 2.7.5

and fix a few typos in the README

.ruby-version

@@ -1 +1 @@
-2.7.0
+2.7.5

.travis.yml

@@ -1,6 +1,6 @@
 language: ruby
 rvm:
-  - '2.4.2'
+  - '2.7.5'
 before_script:
   - cp -v config/database.yml.example config/database.yml
   - yarn install

Gemfile

@@ -1,6 +1,6 @@
 source 'https://rubygems.org'
 
-ruby '2.7.0'
+ruby '2.7.5'
 
 gem 'rails', '~> 5.1.4'
 gem 'pg'

Gemfile.lock

@@ -553,7 +553,7 @@ DEPENDENCIES
   webpacker
 
 RUBY VERSION
-   ruby 2.7.0p0
+   ruby 2.7.5p203
 
 BUNDLED WITH
    2.1.4

README.md

@@ -1,11 +1,12 @@
 # WAHLDATENHELFER :ballot_box_with_check:
 [![Build Status](https://www.travis-ci.com/railslove/wahldatenhelfer.svg?token=rLsyzRs4bH4dqZXw5Aq9&branch=master)](https://www.travis-ci.com/railslove/wahldatenhelfer)
-The oroginal name was Wahldatenhelfer, later has been changed to Wahlgenial.  
-You may find in codebase `wahldatenhelfer`, `Wahlgenial` is for public.
+The original name was Wahldatenhelfer, which has been changed to Wahlgenial.  
+In the codebase `wahldatenhelfer` might still be found, but use `Wahlgenial` for public facing strings.
+
 ## Getting Started
 
 ### Requirements:
-- Ruby 2.4.2
+- Ruby 2.7.5
 - PostgreSQL 9.6 or later.
 
 ### Installation:
@@ -58,12 +59,11 @@ Run `$ rspec` for running tests. To work in file-change-watch mode, run `$ guard
 
 ### React
 #### Storybook
-Run `$ yarn stroybook` for storybook. Stories are located in `/app/javascript/stories/`
+Run `$ yarn storybook` for storybook. Stories are located in `/app/javascript/stories/`
 
 ### Webpacker
 Webpacker is used as a pipeline for JavaScript, to run the development server, run `$ webpack-dev-server`
 
-
 ## Available Assets
 ### ElectionApps Category Icons
 Currently the only icons available for `icon_name` field are: