minor #11935 Updated Sylius description in documentation's README (Va…

…lentineJester)

This PR was merged into the 1.7-dev branch.

Discussion
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| Q               | A
| --------------- | -----
| Branch?         | master
| Bug fix?        | no
| New feature?    | no
| BC breaks?      | no
| Deprecations?   | no
| Related tickets | -
| License         | MIT

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 - Features and deprecations must be submitted against the master branch
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 To be sure you are not breaking any Backward Compatibilities, check the documentation:
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Commits
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ba14b30 Updated Sylius description in documentation's README

docs/README.md

@@ -1,7 +1,7 @@
 Sylius Documentation
 ====================
 
-This directory contains documentation for Sylius - Decoupled eCommerce Platform, available on [**docs.sylius.com**](https://docs.sylius.com). 
+This directory contains documentation for Sylius - Open Source eCommerce platform on top of Symfony, available on [**docs.sylius.com**](https://docs.sylius.com). 
 
 It is hosted by the great [readthedocs.org](http://readthedocs.org).