Add a link to ja_hello from README

Signed-off-by: David A. Wheeler <[email protected]>

Author: david-a-wheeler

docs/labs/README.md

@@ -6,7 +6,7 @@ They're designed to support our free course
 [Developing Secure Software (LFD121)](https://training.linuxfoundation.org/training/developing-secure-software-lfd121/).
 
 You can download the labs in these sections, e.g., to run locally
-without Internet access.
+without Internet access. Labs with a locale prefix are for that locale (e.g., [ja_hello](ja_hello.html) is the Japanese translation of [hello](hello.html)).
 
 We *want* people to create more labs! Here's more information about
 how to do that and the labs we'd like created.
@@ -15,7 +15,7 @@ how to do that and the labs we'd like created.
 
 Here are some of the labs available, which you can use as examples:
 
-* [hello](hello.html) - simple "Hello, world!" demo
+* [hello](hello.html) - simple "Hello, world!" demo. [ja_hello](ja_hello.html)
 * [input1](input1.html) - input validation (simple types)
 * [regex0](regex0.html) - regular expressions (regexes) - introduction
 * [regex1](regex1.html) - regular expressions (regexes)
@@ -77,7 +77,7 @@ work on.
 
 * Input Validation
   * Input Validation Basics
-    * [Input Validation Basics Introduction](https://github.com/ossf/secure-sw-dev-fundamentals/blob/main/secure_software_development_fundamentals.md#input-validation-basics-introduction) - DONE-0 [hello](hello.html)
+    * [Input Validation Basics Introduction](https://github.com/ossf/secure-sw-dev-fundamentals/blob/main/secure_software_development_fundamentals.md#input-validation-basics-introduction) - DONE-0 [hello](hello.html) [ja_hello](ja_hello.html)
     * [How Do You Validate Input?](https://github.com/ossf/secure-sw-dev-fundamentals/blob/main/secure_software_development_fundamentals.md#how-do-you-validate-input), [Input Validation: Numbers and Text](https://github.com/ossf/secure-sw-dev-fundamentals/blob/main/secure_software_development_fundamentals.md#input-validation-numbers-and-text)
   * Input Validation: Numbers and Text
     * Input Validation: A Few Simple Data Types - DONE-0 [input1](input1.html)