fix(userspace/falco): correct typo in -p help message

Co-authored-by: Andrea Terzolo <andrea.terzolo@polito.it>
Signed-off-by: Leonardo Grasso <me@leonardograsso.com>

userspace/falco/app/options.cpp

@@ -216,7 +216,7 @@ void options::define(cxxopts::Options& opts)
 		("nodriver",                      "Do not use a driver to instrument the kernel. If a loaded plugin has event sourcing capability and can produce system events, it will be used to for event collection.", cxxopts::value(nodriver)->default_value("false"))
 		("o,option",                      "Set the value of option <opt> to <val>. Overrides values in configuration file. <opt> can be identified using its location in configuration file using dot notation. Elements which are entries of lists can be accessed via square brackets [].\n    E.g. base.id = val\n         base.subvalue.subvalue2 = val\n         base.list[1]=val", cxxopts::value(cmdline_config_options), "<opt>=<val>")
 		("plugin-info",                   "Print info for a single plugin and exit.\nThis includes all descriptivo info like name and author, along with the\nschema format for the init configuration and a list of suggested open parameters.\n<plugin_name> can be the name of the plugin or its configured library_path.", cxxopts::value(print_plugin_info), "<plugin_name>")
-		("p,print",                       "Print (or replace) additional information in rule's output.\nUse -pc or --pcontainer to append container details.\nUse -pk or --pkubernetes to add both container and Kubernetes details.\nIf using gVisor, choose -pcg or -pkg variants (or --pcontainer-gvisor and --pkubernetes-gvisor, respectively).\nIf a rule's output contains %container.info, it will be replaced with the corresponding details. Otherwise, these details will be directly appended to the rule's output.\nAlternatively, use -p \"...\" for a custom format. In this case, the given content will be appended to the rule's output without any replacement.", cxxopts::value(print_additional), "<output_format>")
+		("p,print",                       "Print (or replace) additional information in rule's output.\nUse -pc or -pcontainer to append container details.\nUse -pk or -pkubernetes to add both container and Kubernetes details.\nIf using gVisor, choose -pcg or -pkg variants (or -pcontainer-gvisor and -pkubernetes-gvisor, respectively).\nIf a rule's output contains %container.info, it will be replaced with the corresponding details. Otherwise, these details will be directly appended to the rule's output.\nAlternatively, use -p \"...\" for a custom format. In this case, the given content will be appended to the rule's output without any replacement.", cxxopts::value(print_additional), "<output_format>")
 		("P,pidfile",                     "When run as a daemon, write pid to specified file", cxxopts::value(pidfilename)->default_value("/var/run/falco.pid"), "<pid_file>")
 		("r",                             "Rules file/directory (defaults to value set in configuration file, or /etc/falco_rules.yaml). This option can be passed multiple times to read from multiple files/directories.", cxxopts::value<std::vector<std::string>>(), "<rules_file>")
 		("s",                             "If specified, append statistics related to Falco's reading/processing of events to this file (only useful in live mode).", cxxopts::value(stats_output_file), "<stats_file>")