chore: Fix a typo in Makefile.am; rerun ./autogen.sh --maintainer

Author: ctruta

Makefile.am

@@ -1,6 +1,6 @@
 # Makefile.am, the source file for Makefile.in (and hence Makefile), is
 #
-# Copyright (c) 2018-2024 Cosmin Truta
+# Copyright (c) 2018-2025 Cosmin Truta
 # Copyright (c) 2004-2016 Glenn Randers-Pehrson
 #
 # This code is released under the libpng license.
@@ -199,7 +199,7 @@ MAINTAINERCLEANFILES = Makefile.in aclocal.m4 config.guess config.h.in \
 config.sub configure depcomp install-sh ltmain.sh missing
 
 # PNG_COPTS give extra options for the C compiler to be used on all compilation
-# steps (unless targe_CFLAGS is specified; that will take precedence over
+# steps (unless target_CFLAGS is specified; that will take precedence over
 # AM_CFLAGS)
 PNG_COPTS = @PNG_COPTS@
 AM_CFLAGS = ${PNG_COPTS}

Makefile.in

@@ -16,7 +16,7 @@
 
 # Makefile.am, the source file for Makefile.in (and hence Makefile), is
 #
-# Copyright (c) 2018-2024 Cosmin Truta
+# Copyright (c) 2018-2025 Cosmin Truta
 # Copyright (c) 2004-2016 Glenn Randers-Pehrson
 #
 # This code is released under the libpng license.
@@ -687,7 +687,7 @@ PNGLIB_RELEASE = @PNGLIB_RELEASE@
 PNGLIB_VERSION = @PNGLIB_VERSION@
 
 # PNG_COPTS give extra options for the C compiler to be used on all compilation
-# steps (unless targe_CFLAGS is specified; that will take precedence over
+# steps (unless target_CFLAGS is specified; that will take precedence over
 # AM_CFLAGS)
 PNG_COPTS = @PNG_COPTS@
 PNG_PREFIX = @PNG_PREFIX@

aclocal.m4

@@ -899,7 +899,7 @@ am_cv_filesystem_timestamp_resolution=2
 # Don't try 1 sec, because if 0.01 sec and 0.1 sec don't work,
 # - 1 sec is not much of a win compared to 2 sec, and
 # - it takes 2 seconds to perform the test whether 1 sec works.
-#
+# 
 # Instead, just use the default 2s on platforms that have 1s resolution,
 # accept the extra 1s delay when using $sleep in the Automake tests, in
 # exchange for not incurring the 2s delay for running the test for all
@@ -972,7 +972,7 @@ for am_try_res in $am_try_resolutions; do
       # everything else supports the subsecond mtimes, but make doesn't;
       # notably on macOS, which ships make 3.81 from 2006 (the last one
       # released under GPLv2). https://bugs.gnu.org/68808
-      #
+      # 
       # We test $MAKE if it is defined in the environment, else "make".
       # It might get overridden later, but our hope is that in practice
       # it does not matter: it is the system "make" which is (by far)