Fixed some spellings in PLUGINS.html and Doxyfile

CONTRIBUTORS

@@ -1997,6 +1997,7 @@ Ville Skytt
  for fixing some typos in HISTORY and CONTRIBUTORS
  for fixing some spellings in osd.h and svdrp.c
  for adding missing $(LDFLAGS) to the Makefile of the dvbhddevice plugin
+ for fixing some spellings in PLUGINS.html and Doxyfile
 
 Steffen Beyer <cpunk@reactor.de>
  for fixing setting the colored button help after deleting a recording in case the next

Doxyfile

@@ -137,7 +137,7 @@ STRIP_CODE_COMMENTS    = YES
 # file names in lower case letters. If set to YES upper case letters are also 
 # allowed. This is useful if you have classes or files whose names only differ 
 # in case and if your file system supports case sensitive file names. Windows 
-# users are adviced to set this option to NO.
+# users are advised to set this option to NO.
 
 CASE_SENSE_NAMES       = YES
 

HISTORY

@@ -7625,3 +7625,4 @@ Video Disk Recorder Revision History
 - Fixed displaying pending timers in "alert" mode in the LCARS skin.
 - Added missing $(LDFLAGS) to the Makefile of the dvbhddevice plugin (thanks to Ville
   Skyttä).
+- Fixed some spellings in PLUGINS.html and Doxyfile (thanks to Ville Skyttä).

PLUGINS.html

@@ -918,7 +918,7 @@ original values that are stored elsewhere.
 </modified>
 <p>
 <modified>
-Threfore VDR provides the functions
+Therefore VDR provides the functions
 
 <p><table><tr><td class="code"><pre>
 <modified>
@@ -939,7 +939,7 @@ call to <tt>ConfigDirectory()</tt> will automatically make sure that the <tt>plu
 subdirectory will exist. If, for some reason, this cannot be achieved, <tt>NULL</tt>
 will be returned.
 <modified>
-The behavoir of <tt>CacheDirectory()</tt> and <tt>ResourceDirectory()</tt> is similar.
+The behavior of <tt>CacheDirectory()</tt> and <tt>ResourceDirectory()</tt> is similar.
 </modified>
 <p>
 The additional <tt>plugins</tt> directory is used to keep files from plugins apart