Fixed Typos and punctuation errors in Chapter-1 Getting started (#77)
* Fixed grammatical and punctuation errors.
* fixed typos and punctuation errors
* Fixing Typos and punctuation errors
* Fixing typos and punctuation errors
* Fixing typos and punctuation errors
* fixing typos and punctuation errors
* fixing typos and punctuation errors
* Fixing typos and punctuation errors
* fixing typos and punctuation errors
* fixing typos and punctuation errors
* fixed typo
* fixed typo
Co-authored-by: Jim Bennett <jim.bennett@microsoft.com>