fix typos, add hint regarding HTML site deployment

Author: PhilippSalvisberg

README.md

@@ -45,10 +45,10 @@ Please file your bug reports, enhancement requests, questions and other support
    * [Install Docker Server on Linux](https://docs.docker.com/install/#server)
 2. [Fork this respository](https://github.com/trivadis/plsql-and-sql-coding-guidelines/fork)
 3. Check/change the version in [mkdocs.yml](mkdocs.yml)
-4. Open termin in [tools](tools) folder 
-   * Deploy into default folder
+4. Open a terminal in the [tools](tools) folder 
+   * Deploy default site (deletes all version sites)
      run `./gh-deploy.sh`
-   * Deploy into a version folder 
+   * Deploy version site 
      run `./mike.sh deploy <version>`. `<version>` represents the folder name, e.g. `master` or `v3.4`.
    * Build the PDF file
      run `./genpdf.sh`.