minor wording change


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13694 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/README.txt b/lib/Target/X86/README.txt
index 46849af..558846d 100644
--- a/lib/Target/X86/README.txt
+++ b/lib/Target/X86/README.txt
@@ -132,7 +132,7 @@
 ------------------------------------
 
 The x86 has a very, uhm, flexible, way of accessing memory.  It is capable of
-addressing memory addresses of the following form directly in integer
+forming memory addresses of the following expression directly in integer
 instructions (which use ModR/M addressing):
 
    Base+[1,2,4,8]*IndexReg+Disp32