Did spell check on vector integration chapter

Author: francislaus

src/vector-integration.adoc

@@ -11,7 +11,7 @@ NOTE: A future extension may allow tags to be stored in vector registers.
   because the vector registers do not hold capabilities, so the tags of any
   copied capabilities will be set to 0 in the destination memory.
 
-Vector loads and stores all follow the behaviour as described in
+Vector loads and stores all follow the behavior as described in
 xref:section_int_load_store_insns[xrefstyle=short].
 
 The assembly syntax of all vector loads and stores are updated in