Fix typos

doc/org.texi

@@ -10477,7 +10477,7 @@ respectively.  Any other value will mix files and folders.
 @code{nil} to turn off sorting.
 
 @item @code{:sitemap-ignore-case}
-@tab Should sorting be case-sensitively?  Default @code{nil}.
+@tab Should sorting be case-sensitive?  Default @code{nil}.
 
 @end multitable
 
@@ -12709,7 +12709,7 @@ with links transformation to Org syntax.
 chapter about publishing.
 @item
 @i{Stefan Vollmar} organized a video-recorded talk at the
-Max-PLanck-Institute for Neurology.  He also inspired the creation of a
+Max-Planck-Institute for Neurology.  He also inspired the creation of a
 concept index for HTML export.
 @item
 @i{J@"urgen Vollmer} contributed code generating the table of contents

lisp/org-publish.el

@@ -184,7 +184,7 @@ sitemap of files or summary page for a given project.
                            Any other value will mix files and folders.
   :sitemap-alphabetically  The site map is normally sorted alphabetically.
                            Set this explicitly to nil to turn off sorting.
-  :sitemap-ignore-case     Should sorting be case-sensitively?  Default nil.
+  :sitemap-ignore-case     Should sorting be case-sensitive?  Default nil.
 
 The following properties control the creation of a concept index.