Added content to readme.md file of 104-qa-non-functional-testing (#2343)

* Added content to readme.md file of 104-qa-non-functional-testing

[#1840 ](https://github.com/kamranahmedse/developer-roadmap/issues/1840) I contributed to this issue by adding content to the readme.md file of 104-qa-non-functional-testing folder.

* Update content/roadmaps/113-qa/content/104-qa-non-functional-testing/readme.md

Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

content/roadmaps/113-qa/content/104-qa-non-functional-testing/readme.md

@@ -1 +1,3 @@
-# Qa non functional testing
+# Non Functional Testing
+
+In the process of Software testing, testing and analyzing only software’s functions doesn't complete the testing process. There are some other attributes which will demonstrate the entire software quality, they are known as quality characteristics. These characteristics includes performance, security, usability, and reliability. Also not testing and analyzing the report of these characterisitics will not affect the function of software, it will work to a degree of extent,but testing of these quality characteristics are referred to as Qa non-functional testing.