Typos

[Ralf Wildenhues]

Hello,

I've applied this to master.

Cheers,
Ralf

    * doc/autoconf.texi (autom4te Invocation, Autom4te Cache): Fix typos.

diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index d6bd786..3d76b3e 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -9906,7 +9906,7 @@ traces are cached while performing regular expansion,
 and conversely.  This cache is (actually, the caches are) stored in
 the directory @file{autom4te.cache}.  @emph{It can safely be removed}
 at any moment (especially if for some reason @command{autom4te}
-considers it is trashed).
+considers it trashed).
 
 @table @option
 @item address@hidden
@@ -20673,7 +20673,7 @@ a specific demand, stores additional information in
 @command{autoconf}, behind the scenes, @command{autom4te} also
 stores information for the other tools, so that when you invoke
 @command{autoheader} or @command{automake} etc., reprocessing
address@hidden is not needed.  The speed up is frequently of 30%,
address@hidden is not needed.  The speed up is frequently 30%,
 and is increasing with the size of @file{configure.ac}.
 
 But it is and remains being simply a cache: you can safely remove it.