Update source/tutorial/deploy-geographically-distributed-replica-set.txt

Fixed spelling.

Author: aaronott

source/tutorial/deploy-geographically-distributed-replica-set.txt

@@ -90,7 +90,7 @@ features:
 
   - Establish a virtual private network between the systems in Site A
     and Site B to encrypt all traffic between the sites and remains
-    private. Ensure that your network topology routs all traffic between
+    private. Ensure that your network topology routes all traffic between
     members within a single site over the local area network.
 
   - Configure authentication using :setting:`auth` and
@@ -276,15 +276,15 @@ features:
     secondary-only member in Site C, and an arbiter in site A.
 
   In most cases the first architecture is preferable because it is the
-  lest complex.
+  least complex.
 
 - Ensure that network traffic can pass between all members in the
   network securely and efficiently. Consider the following:
 
   - Establish a virtual private network between the systems in Site A
     and Site B (and Site C if it exists) to encrypt all traffic
     between the sites and remains private. Ensure that your network
-    topology routs all traffic between members within a single site
+    topology routes all traffic between members within a single site
     over the local area network.
 
   - Configure authentication using :setting:`auth` and