Fix a typo in the bytecode format documentation

llvm-svn: 16072
diff --git a/llvm/docs/BytecodeFormat.html b/llvm/docs/BytecodeFormat.html
index 3345023..9480da4 100644
--- a/llvm/docs/BytecodeFormat.html
+++ b/llvm/docs/BytecodeFormat.html
@@ -1474,7 +1474,7 @@
   <a href="http://llvm.org/cvsweb/cvsweb.cgi/llvm/include/llvm/Instruction.def">
   <tt>include/llvm/Instruction.def</tt></a> file. You should check there for the
   most recent definitions. The table below provides the opcodes defined as of
-  the writing of this document. The table associates each opcode mneumonic with
+  the writing of this document. The table associates each opcode mnemonic with
   its enumeration value and the bytecode and LLVM version numbers in which the
   opcode was introduced.</p>
   <table>