REST API documentation: Fix heading level for "JSON Entities" sections

Signed-off-by: Edwin Kempin <ekempin@google.com>
Change-Id: I857050c7c01d8b51d4f1d7308109dfece3d7b154
diff --git a/src/main/resources/Documentation/rest-api-checkers.md b/src/main/resources/Documentation/rest-api-checkers.md
index 94f2e4c..8e2ce93 100644
--- a/src/main/resources/Documentation/rest-api-checkers.md
+++ b/src/main/resources/Documentation/rest-api-checkers.md
@@ -172,7 +172,7 @@
 Checker names cannot be used as identifiers in the REST API since checker names
 may be ambiguous.
 
-### <a id="json-entities"> JSON Entities
+## <a id="json-entities"> JSON Entities
 
 ### <a id="checker-info"> CheckerInfo
 The `CheckerInfo` entity describes a checker.
diff --git a/src/main/resources/Documentation/rest-api-checks.md b/src/main/resources/Documentation/rest-api-checks.md
index cb306fa..4263582 100644
--- a/src/main/resources/Documentation/rest-api-checks.md
+++ b/src/main/resources/Documentation/rest-api-checks.md
@@ -152,7 +152,7 @@
 the URL, it must either match the value provided in the request body via
 [CheckInput](#check-input) or the value in the request body is omitted.
 
-### <a id="json-entities"> JSON Entities
+## <a id="json-entities"> JSON Entities
 
 ### <a id="check-info"> CheckInfo
 The `CheckInfo` entity describes a check.