Update routing.asciidoc

some minor mistakes found while reading.

routing.asciidoc

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 == Routing on a Network of Payment channels
 In this section we will finally unpack how payment channels can be connected to a network of other payment channels via a process called _routing_.
 Note that we separate the concept of _routing_ from the concept of _path finding_.
-Routing refers to the series of interactions across the network that allow a payment to _flow_ from point A to point B, i.e. the _active_ process of process of sending a payment.
+Routing refers to the series of interactions across the network that allow a payment to _flow_ from point A to point B, i.e. the _active_ process of sending a payment.
 An important rule of thumb is that it's possible for a _path_ to exist between Alice and Bob, yet there may not be an active _route_ on which to send the payment.
 One example is the scenario where all the nodes connecting Alice and Bob are currently off-line. 
-In theory, one can examine the _channel graph_ and connect a series of payment channels from Alice to Beb, hence a _path_ exists.
+In theory, one can examine the _channel graph_ and connect a series of payment channels from Alice to Bob, hence a _path_ exists.
 However, as the intermediary nodes are offline, the payment cannot be sent and so no _route_ exists.
 
 The innovation of routed payment channels allows our gamer Gloria to receive funds from her fans without maintaining a separate channel with every one of her fans who want to tip her.