exec, javac: add more information link (#6536)

pages.it/common/exec.md

@@ -1,6 +1,7 @@
 # exec
 
 > Sostituisci il processo corrente con un altro.
+> Maggiori informazioni: <https://linuxcommand.org/lc3_man_pages/exech.html>.
 
 - Sostituisci con il comando specificato utilizzando le variabili di ambiente correnti:
 

pages.ta/common/javac.md

@@ -1,6 +1,7 @@
 # javac
 
 > ஜாவா நிரல்மொழிமாற்றி.
+> மேலும் தகவல்: <https://docs.oracle.com/en/java/javase/17/docs/specs/man/javac.html>.
 
 - `.java` கோப்பை நிரல்மொழிமாற்ற:
 

pages.zh/common/javac.md

@@ -1,6 +1,7 @@
 # javac
 
 > Java 程序编译器。
+> 更多信息：<https://docs.oracle.com/en/java/javase/17/docs/specs/man/javac.html>.
 
 - 编译一个 `.java` 文件：
 

pages/common/exec.md

@@ -1,6 +1,7 @@
 # exec
 
 > Replace the current process with another process.
+> More information: <https://linuxcommand.org/lc3_man_pages/exech.html>.
 
 - Replace with the specified command using the current environment variables:
 

pages/common/javac.md

@@ -1,6 +1,7 @@
 # javac
 
 > Java Application Compiler.
+> More information: <https://docs.oracle.com/en/java/javase/17/docs/specs/man/javac.html>.
 
 - Compile a `.java` file: