change "version(s)" per style guide

Author: mongoKart

source/compatibility.txt

@@ -13,10 +13,10 @@ Compatibility
 MongoDB Compatibility
 ---------------------
 
-The following compatibility table specifies the recommended version(s) of the
+The following compatibility table specifies the recommended version of the
 {+driver-long+} for use with a specific version of MongoDB.
 
-The first column lists the driver version(s).
+The first column lists the driver version.
 
 .. sharedinclude:: dbx/compatibility-table-legend.rst