Cleanup CSS tags in headings in kexts.md

kexts.md

@@ -56,7 +56,7 @@ A cache of installed KEXTs is kept in order to speed up boot time.
 Extensions.mkext can be unpacked with the [mkextunpack](http://developer.apple.com/documentation/Darwin/Reference/ManPages/man8/mkextunpack.8.html) command:
 
 <span><span style="font-family:courier new,monospace"><span style="font-size:small">mkextunpack -v -d /tmp/Extensions Extensions.mkext</span></span></span>
-### Force cache update {style="margin:10px 10px 10px 0px;color:rgb(0,0,0)"}
+### Force cache update
 <span style="font-size:small">Normally, <span style="font-family:courier new,monospace">Extensions.mkext</span> is updated whenever we add or remove extensions using the Finder on a Mac OS X system. However, if you install an extension as a plug-in of another (a subfolder into<span style="font-style:italic"> $VOLUME/System/Library/Extensions</span>), the automatic cache updater is not triggered.</span>
 
 To force cache update, simply change the modification date of <span style="font-style:italic">$VOLUME/System/Library/Extensions</span>:
@@ -68,6 +68,6 @@ To force cache update, simply change the modification date of <span style="font-
 (To be written)
 #### Family KEXTs
 Family KEXTs are not drivers. Family KEXTs generally contain classes that you are to subclass
-#### Filesystem KEXTs {style="margin:10px 10px 10px 0px;background-color:transparent;color:rgb(0,0,0);font-family:Arial,Verdana,sans-serif;font-size:14px"}
+#### Filesystem KEXTs
 Filesystem KEXTs are not drivers.