validaton.md: Link to the config options that disable some of the checks

Signed-off-by: Edwin Kempin <ekempin@google.com>
Change-Id: Ib0e18ac7eff44e8428b083319bc18c0d4d8e9bcf
diff --git a/resources/Documentation/validation.md b/resources/Documentation/validation.md
index 69929f4..182f674 100644
--- a/resources/Documentation/validation.md
+++ b/resources/Documentation/validation.md
@@ -94,7 +94,8 @@
 following checks are performed:
 
 * the code owner config files are parseable
-* the code owner emails are resolveable:\
+* the code owner emails are resolveable (unless this check is
+  [disabled](config.html#codeOwnersRejectNonResolvableCodeOwners)):\
   a code owners email is not resolveable if:
     * the account that owns it is inactive
     * the account that owns it is not visible to the uploader (according to
@@ -106,7 +107,8 @@
     * it has an email domain that is disallowed (see
       [allowedEmailDomain](config.html#pluginCodeOwnersAllowedEmailDomain))
       configuration
-* the imports are resolveable:\
+* the imports are resolveable (unless this check is
+  [disabled](config.html#codeOwnersRejectNonResolvableImports)):\
   an import is not resolveable if:
     * the imported file is not a code owner config file
     * the imported file is not parseable