Fixed two typos in documentation.

VisualC.html

@@ -21,7 +21,7 @@ <H3>
 		</P>
 		<P>
 			There are different solution files for the various
-			versions of the IDE. Please use the appropiate version
+			versions of the IDE. Please use the appropriate version
 			2008, 2010, 2012 or 2013.
 		</P>
 		<P>
@@ -101,7 +101,7 @@ <H3>
 				files to project")
 			</P>
 		<P><STRONG><FONT color="#009900">Instead of adding the files to your project it is more 
-					desireable to add them to the linker options: Project|Properties|Linker|Command 
+					desirable to add them to the linker options: Project|Properties|Linker|Command 
 					Line and type the names of the libraries to link with in the "Additional 
 					Options:" box.&nbsp; Note: This must be done&nbsp;for&nbsp;each&nbsp;build 
 					configuration (e.g. Release,Debug).</FONT></STRONG></P>