- Updated SM description tag for better SEO

Author: alexis-

docs/README.md

@@ -2,7 +2,7 @@
 
 #### What is it?
 
-[SuperMemo](https://super-memo.com/supermemo18.html) is a program that **makes learning easy and fun**. [The](https://supermemo.guru/wiki/Spaced_repetition) [methods](https://supermemo.guru/wiki/Incremental_reading) it [pioneered](https://supermemo.guru/wiki/History_of_spaced_repetition) not only enable you to remember the things you **learn forever**, but also to assemble knowledge at an **unprecedented rate**.
+[SuperMemo](https://super-memo.com/supermemo18.html) is a program that **makes learning easy and fun**. [The](https://supermemo.guru/wiki/Spaced_repetition) [methods](https://supermemo.guru/wiki/Incremental_reading) it [pioneered](https://supermemo.guru/wiki/History_of_spaced_repetition) not only enable you to remember the things you **learn forever**, but also to gain knowledge at an **unprecedented rate**.
 
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docs/index.html

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   <meta charset="UTF-8">
   <title>SuperMemo Community Wiki</title>
   <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
-  <meta name="description" content="SuperMemo documentation, made by its Community.">
+  <meta name="description" content="SuperMemo is a program that makes learning easy and fun. The methods it pioneered not only enable you to remember the things you learn forever, but also to gain knowledge at an unprecedented rate.">
   <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
 
   <!-- Favicon -->