Fix typos.
diff --git a/docs/usermanual-clusters.xml b/docs/usermanual-clusters.xml
index 8b64bde..608371b 100644
--- a/docs/usermanual-clusters.xml
+++ b/docs/usermanual-clusters.xml
@@ -290,11 +290,11 @@
0 ,3,2,4
</programlisting>
<para>
- There's no way to differentitate between these two scenarios based
+ There's no way to differentiate between these two scenarios based
on the cluster numbers alone.
</para>
<para>
- Another problem appens with ligatures under level 2 if the
+ Another problem happens with ligatures under level 2 if the
direction of the text is forced to opposite of its natural
direction (e.g. left-to-right Arabic). But that's too much of a
corner case to worry about.
diff --git a/docs/usermanual-install-harfbuzz.xml b/docs/usermanual-install-harfbuzz.xml
index 37450d0..899cc5b 100644
--- a/docs/usermanual-install-harfbuzz.xml
+++ b/docs/usermanual-install-harfbuzz.xml
@@ -50,7 +50,7 @@
and hb-shape under <filename>util/</filename>.
</para>
<para>
- If you are bootstraping from git, you need a few more tools before you
+ If you are bootstrapping from git, you need a few more tools before you
can run <filename>autogen.sh</filename> for the first time. Namely,
pkg-config and <ulink url="http://www.complang.org/ragel/">ragel</ulink>.
Again, on Ubuntu / Debian:
