Merge pull request #793 from conscott/fix_typo

Fix Typo

consensus.asciidoc

@@ -73,7 +73,7 @@ Consensus algorithms are evolving rapidly, attempting to answer these questions
 
 === Consensus controversy and competition
 
-At this point you might be wondering: why do we need so many different consensus algorithms? Which one works better? The answer to that question is at the center of the most exciting are of research in distributed systems of the past decade. It all boils down to what you consider "better", which in the context of computer science is about assumptions, goals, and the unavoidable tradeoffs.
+At this point you might be wondering: why do we need so many different consensus algorithms? Which one works better? The answer to that question is at the center of the most exciting area of research in distributed systems of the past decade. It all boils down to what you consider "better", which in the context of computer science is about assumptions, goals, and the unavoidable tradeoffs.
 
 It is likely that no  algorithm can optimize across all dimensions of the problem of decentralized consensus. When someone suggests that a consensus algorithm is "better", you should start asking questions that clarify: Better at what? Immutability, finality, decentralization, cost? There is no clear answer to these questions, at least not yet. Furthermore, the design of consensus algorithms is at the center of a multi-billion dollar industry and generates enormous controversy and heated arguments. In the end, there might not be a "correct" answer, as much as there might be different answers for different applications.