Update modules/exploits/windows/http/lg_simple_editor_rce.rb

Co-authored-by: jheysel-r7 <[email protected]>

modules/exploits/windows/http/lg_simple_editor_rce.rb

@@ -18,7 +18,7 @@ def initialize(info = {})
         'Description' => %q{
           This Metasploit module exploits broken access control and directory traversal
           vulnerabilities in LG Simple Editor software for gaining code execution.
-          The vulnerabilities exists in versions of LG Simple Editor prior to v3.21.
+          The vulnerabilities exist in versions of LG Simple Editor prior to v3.21.
           By exploiting this flaw, an attacker can upload and execute a malicious JSP
           payload with the SYSTEM user permissions.
         },