Modify README.md for folders change under phosphor-regulators and link.

Rename validate-regulators-config to validate-regulators-config.py and
create schema folder that includes the config_schema.json file that
validate-regulators-config.py needs.

Signed-off-by: Bob King <Bob_King@wistron.com>
Change-Id: Ib09e1bee6f13361a787ab82f7937d02a80cb41c4
diff --git a/phosphor-regulators/docs/config_file/README.md b/phosphor-regulators/docs/config_file/README.md
index a51f82c..3ef8eb7 100644
--- a/phosphor-regulators/docs/config_file/README.md
+++ b/phosphor-regulators/docs/config_file/README.md
@@ -110,7 +110,7 @@
 ## Validation
 
 After creating or modifying a config file, you need to validate it using the
-tool [validate-regulators-config](../../tools/validate-regulators-config).
+tool [validate-regulators-config.py](../../tools/validate-regulators-config.py).
 
 The validation tool checks the config file for errors, such as:
 * Invalid JSON syntax (like a missing brace)
@@ -121,11 +121,11 @@
 
 The tool requires two input files:
 * config file to validate
-* [config_schema.json](../../tools/config_schema.json)
+* [config_schema.json](../../schema/config_schema.json)
 
 The tool has the following command line syntax:
 ```
-validate-regulators-config -c <config file> -s config_schema.json
+validate-regulators-config.py -c <config file> -s config_schema.json
 ```
 where `<config file>` is the name of the config file to validate.