[gimp-help] Fixed typo: "Unix-sytem like systems" -> "Unix-like systems" (only in src)

[Jacob Boerema <jboerema src gnome org>]

commit 067c57b92f37a548574ee72e5b8017ab27ebdbef
Author: Tc14 <tc14hd gmail com>
Date:   Sat Jul 10 20:57:53 2021 +0200

    Fixed typo: "Unix-sytem like systems" -> "Unix-like systems" (only in src)

 src/concepts/plugins.xml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/concepts/plugins.xml b/src/concepts/plugins.xml
index 8953d410c..9ca52eb8b 100644
--- a/src/concepts/plugins.xml
+++ b/src/concepts/plugins.xml
@@ -166,7 +166,7 @@
       the two are best considered separately.
     </para>
     <sect3>
-      <title>Linux / Unix-sytem like systems</title>
+      <title>Linux / Unix-like systems</title>
       <para>
         Most plugins fall into two categories: small ones whose source
         code is distributed as a single .c file, and larger ones whose