Typo fixes

chapters/beam.asciidoc

@@ -490,7 +490,7 @@ Compiled to BEAM code this will look like:
 
 (See add.erl and add.S in xref:AP-listings[] for the full code.)
 
-Now if we zoom in on the the three instructions betwen the function calls
+Now if we zoom in on the three instructions betwen the function calls
 in this code:
 
 [source, Erlang]

chapters/io.asciidoc

@@ -32,7 +32,7 @@ an Erlang process and communicate through message passing.
 
 Each port has an owner, more on this later, but all processes
 who know about the port can send messages to the port.
-In figure REF we see how a processes can communicate with the
+In figure REF we see how a process can communicate with the
 port and how the port is communicating to the world outside the
 Erlang node.
 

chapters/memory.asciidoc

@@ -518,7 +518,7 @@ as atoms, modules, funs and long lived tables
 ==== The fixed size allocator: fix_alloc
 
 The fixed allocator is used for objects of a fixed size, such as PCBs,
-message refs and a few other. The fixed size allocator uses the
+message refs and a few others. The fixed size allocator uses the
 _address order best fit_ allocation strategy by default.
 
 // driver_event_data_state driver_select_data_state monitor_sh msg_ref