chore: remove repetitive word

Signed-off-by: hongkuang <liurenhong@outlook.com>

client/src/gamedata/en/descriptions/levels/dex_complete.md

@@ -1,6 +1,6 @@
 The integer math portion aside, getting prices or any sort of data from any single source is a massive attack vector in smart contracts. 
 
-You can clearly see from this example, that someone with a lot of capital could manipulate the price in one fell swoop, and cause any applications relying on it to use the the wrong price. 
+You can clearly see from this example, that someone with a lot of capital could manipulate the price in one fell swoop, and cause any applications relying on it to use the wrong price. 
 
 The exchange itself is decentralized, but the price of the asset is centralized, since it comes from 1 dex. However, if we were to consider tokens that represent actual assets rather than fictitious ones, most of them would have exchange pairs in several dexes and networks. This would decrease the effect on the asset's price in case a specific dex is targeted by an attack like this.