Merge pull request sendgrid#4101 from spencerbyw/sg-typo-fixes

Fix various typos in the documentation

Author: Kaylyn Sigler

content/docs/for-developers/parsing-email/setting-up-the-inbound-parse-webhook.md

@@ -527,6 +527,6 @@ Content analysis details:   (0.4 points, 5.0 required)
 
 ## 	Statistics
 
-SendGrid provides [statistics](https://app.sendgrid.com/statistics/parse_webhook) of how many emails parsed over time. You can specify what is displayed on the graph by adjusting the statistics filters.
+SendGrid provides [statistics](https://app.sendgrid.com/statistics/parse_webhook) of how many emails are parsed over time. You can specify what is displayed on the graph by adjusting the statistics filters.
 
 For more information, please see [Parse Webhook Stats]({{root_url}}/API_Reference/Web_API_v3/Stats/parse.html).

styleguide.md

@@ -152,7 +152,7 @@ Please use PNG, GIF, or JPG files. Give the screenshots unique, meaningful names
 
 ### Size and resolution:
 
-When possible, try to take screenshot at a size that is twice what it will need to be on the page.
+When possible, try to take screenshots at a size that is twice what it will need to be on the page.
 
 ### Alt text: