chore: fix grammar and Markdown line spacing (apache#227)

Author: jbampton

CHANGELOG.md

@@ -18,10 +18,13 @@
 -->
 
 # Changelog
+
 ## Next
+
 * NodeJS version: 10.24.0
 
 ## 2.2.0
+
 * NodeJS version: 10.21.0
 * Handle URL params gently (#219)
 * Add missing npm install. (#218)

CONTRIBUTING.md

@@ -19,7 +19,7 @@
 
 # Contributing to Apache OpenWhisk
 
-Anyone can contribute to the OpenWhisk project and we welcome your contributions.
+Anyone can contribute to the OpenWhisk project, and we welcome your contributions.
 
 There are multiple ways to contribute: report bugs, improve the docs, and
 contribute code, but you must follow these prerequisites and guidelines:
@@ -48,7 +48,7 @@ Please raise any bug reports on the respective project repository's GitHub issue
 list to see if your issue has already been raised.
 
 A good bug report is one that make it easy for us to understand what you were trying to do and what went wrong.
-Provide as much context as possible so we can try to recreate the issue.
+Provide as much context as possible, so we can try to recreate the issue.
 
 ### Discussion
 

README.md

@@ -33,7 +33,6 @@ The package includes the following feeds.
 | `/whisk.system/alarms/once` | feed | date, trigger_payload, deleteAfterFire | Fire Trigger event once on a specific date. |
 | `/whisk.system/alarms/alarm` | feed | cron, trigger_payload, startDate, stopDate | Fire Trigger event on a time-based schedule using cron. |
 
-
 ## Firing a trigger event periodically on an interval based schedule
 
 The `/whisk.system/alarms/interval` feed configures the Alarm service to fire a Trigger event on an interval based schedule. The parameters are as follows: