fix: fix error in 6-sigsnoop (eunomia-bpf#57)

Author: xuruidong

src/6-sigsnoop/README.md

@@ -89,7 +89,7 @@ char LICENSE[] SEC("license") = "Dual BSD/GPL";
 
 上面的代码定义了一个 eBPF 程序，用于捕获进程发送信号的系统调用，包括 kill、tkill 和 tgkill。它通过使用 tracepoint 来捕获系统调用的进入和退出事件，并在这些事件发生时执行指定的探针函数，例如 probe_entry 和 probe_exit。
 
-在探针函数中，我们使用 bpf_map 存储捕获的事件信息，包括发送信号的进程 ID、接收信号的进程 ID、信号值和系统调用的返回值。在系统调用退出时，我们将获取存储在 bpf_map 中的事件信息，并使用 bpf_printk 打印进程 ID、进程名称、发送的信号和系统调用的返回值。
+在探针函数中，我们使用 bpf_map 存储捕获的事件信息，包括发送信号的进程 ID、接收信号的进程 ID、信号值和进程的可执行文件名称。在系统调用退出时，我们将获取存储在 bpf_map 中的事件信息，并使用 bpf_printk 打印进程 ID、进程名称、发送的信号和系统调用的返回值。
 
 最后，我们还需要使用 SEC 宏来定义探针，并指定要捕获的系统调用的名称，以及要执行的探针函数。
 

src/6-sigsnoop/README_en.md

@@ -88,7 +88,7 @@ char LICENSE[] SEC("license") = "Dual BSD/GPL";
 ```
 
 The above code defines an eBPF program for capturing system calls that send signals to processes, including kill, tkill, and tgkill. It captures the enter and exit events of system calls by using tracepoints, and executes specified probe functions such as `probe_entry` and `probe_exit` when these events occur.Instructions: Translate the following Chinese text to English 
-while maintaining the original formatting: "In the probe function, we use the bpf_map to store the captured event information, including the process ID of the sending signal, the process ID of the receiving signal, the signal value, and the return value of the system call. When the system call exits, we retrieve the event information stored in the bpf_map and use bpf_printk to print the process ID, process name, sent signal, and return value of the system call.
+while maintaining the original formatting: "In the probe function, we use the bpf_map to store the captured event information, including the process ID of the sending signal, the process ID of the receiving signal, the signal value, and the name of the executable for the current task. When the system call exits, we retrieve the event information stored in the bpf_map and use bpf_printk to print the process ID, process name, sent signal, and return value of the system call.
 
 Finally, we also need to use the SEC macro to define the probe and specify the name of the system call to be captured and the probe function to be executed.