Unify interface description

Change-Id: I70662a6a4873539a6229d3b53ae04da8b04fd733

api-ref/source/v1/anomaly-detect.inc

@@ -6,7 +6,7 @@ Anomaly Detect
 Users can add, delete, modify and query anomaly rules, query and delete anomaly records.
 
 
-Get Anomaly Rule
+Get anomaly rule
 ~~~~~~~~~~~~~~~~~~~
 
 .. rest_method:: GET /v1/anomaly/rule/{id}
@@ -41,7 +41,7 @@ Response
    :language: javascript
 
 
-Update Anomaly Rule
+Update anomaly rule
 ~~~~~~~~~~~~~~~~~~~
 
 .. rest_method:: POST /v1/anomaly/rule/{id}

api-ref/source/v1/api-versions.inc

@@ -1,9 +1,9 @@
 .. -*- rst -*-
 
-API versions
+API Versions
 ============
 
-List Api Versions
+List api versions
 ~~~~~~~~~~~~~~~~~
 
 .. rest_method:: GET /

api-ref/source/v1/custom-config.inc

@@ -5,7 +5,7 @@ Custom Config
 
 Users can customize some important configurations, such as the retention days of ElasticSearch index.
 
-Get Custom Config
+Get custom config
 ~~~~~~~~~~~~~~~~~
 
 .. rest_method:: GET /v1/custom_config
@@ -33,7 +33,7 @@ Response
    :language: javascript
 
 
-Set Custom Config
+Set custom config
 ~~~~~~~~~~~~~~~~~
 
 .. rest_method:: POST /v1/custom_config

api-ref/source/v1/search.inc

@@ -5,7 +5,7 @@ Search API
 
 Users can search, download and analyze logs, instance callchain.
 
-Get Search Params
+Get search params
 ~~~~~~~~~~~~~~~~~
 
 .. rest_method:: GET /v1/search/params
@@ -91,7 +91,7 @@ Response
 .. -*- rst -*-
 
 
-Download Logs
+Download logs
 ~~~~~~~~~~~~~
 
 .. rest_method:: GET /v1/search/logs/download