feat: renamed help command to about

docs/guide/introduction.md

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+# Introduction
+
+Blitzkrieg is a multipurpose bot for anything and everything World of Tanks Blitz.
+
+- Track statistics
+- Find inactive players in a clan
+- Lookup owned tanks
+- Create embeds for streams
+- Track a player/tanks statistical evolution
+- ...and a variety of other similar things