[ADF-1159] Fix misspellings in .md files (#2124)

CONTRIBUTING.md

@@ -2,13 +2,13 @@
 
 ## Submitting a Pull Request (PR)
 
-Before you submit please follow the following step: 
+Before you submit please follow the steps below: 
 
 * Search in  [GitHub PR](https://github.com/Alfresco/alfresco-ng2-components/pulls) for an open or closed PR
-  that could solve or already solve your issue.
+  that could solve or already solves your issue.
 * Search in the [GitHub release history](https://github.com/Alfresco/alfresco-ng2-components/releases) if your
   issue has already been solved in a new version of ADF.
-* Fork our repository [if you don't know how to do it read this GitHub document](https://help.github.com/articles/creating-a-pull-request-from-a-fork/)
+* Fork our repository - [if you don't know how to do it read this GitHub document](https://help.github.com/articles/creating-a-pull-request-from-a-fork/)
 * Make your changes in a new git branch starting from development and following the [naming convention](https://github.com/Alfresco/alfresco-ng2-components/wiki/Branching-Strategy)
 
      ```shell
@@ -16,7 +16,7 @@ Before you submit please follow the following step:
      ```
 
 * Create your PR **including appropriate test cases** following the [code contribution acceptance criteria](https://github.com/Alfresco/alfresco-ng2-components/wiki/Code-contribution-acceptance-criteria)
-* Run the test and make sure they are green and please don't comment out or exclude the already present test
+* Run the tests and make sure they are green. Please don't comment out or exclude the already existing tests
 * Commit your change using the [commit format message good practice](https://github.com/Alfresco/alfresco-ng2-components/wiki/Commit-format)
 * Push your branch to GitHub:
 
@@ -27,7 +27,7 @@ Before you submit please follow the following step:
 * In GitHub, send a pull request to `development`.
 * If we suggest changes then:
   * Make the required updates.
-  * Re-run the test.
+  * Re-run the tests.
   * Rebase your branch and force push to your GitHub repository (this will update your Pull Request):
 
     ```shell
@@ -36,14 +36,14 @@ Before you submit please follow the following step:
     git rebase development -i
     git push -f
     ```
-Note: If you need more information about how to [sync your fork](https://help.github.com/articles/syncing-a-fork/)
+Note: If you need more information about how to sync your fork, see [here](https://help.github.com/articles/syncing-a-fork/)
 
 ## Code style
 
-The code style in the ADF code follow the [Angular style guide](https://angular.io/guide/styleguide) plus some internal rules.
-you don’t have to worry too much about out those rules because are automatically checked by tslint/codelyzer/adf-rules.
-If your code is not complaint to one of this rules you will receive and error when you build the project with some help on how to fix it.
+The code style in the ADF code follows the [Angular style guide](https://angular.io/guide/styleguide) plus some internal rules.
+You don’t have to worry too much about those rules because they are automatically checked by tslint/codelyzer/adf-rules.
+If your code is not compliant to one of these rules you will receive an error when you build the project with some help on how to fix it.
 The ADF-Rules :
-* File name component/directive can not to start with Alfresco/Activiti/adf this rules is to help developer to find files easily
-* Class name can not to start with Alfresco/Activiti/adf for the same reason above
-* scss is mandatory and the class have to start with the adf- prefix
+* File name component/directive cannot start with Alfresco/Activiti/adf - this rule is to help developers find files easily
+* Class names cannot start with Alfresco/Activiti/adf for the same reason as above
+* scss is mandatory and the classes have to have the adf- prefix