Update guide.html; fix typo
much -> must
Closes
@@ -851,7 +851,7 @@ $ bazel fetch //...
in the order shown below. The options are interpreted in this order, so
options in later files can override a value from an earlier file if a
conflict arises. All options to control which of these files are loaded are
- startup options, which means they much occur after <code>bazel</code> and
+ startup options, which means they must occur after <code>bazel</code> and
before the command (<code>build</code>, etc).
</p>
<ol>
