docs: add en docs

Author: nisiyong

docs/en/usage/other-language-client-user-guide.md

@@ -176,10 +176,10 @@ Apollo has added an access key mechanism since version 1.6.0, so that only authe
 
 Header information to be set.
 
-| Header        | Value                                                        | Remarks                                                      |
-| ------------- | ------------------------------------------------------------ | ------------------------------------------------------------ |
-| Authorization | Apollo ${appId}:${signature}                                 | appId: the appId of the application, signature: the current time and the URL visited using the access key after the value of the signature, the specific implementation can be found in [Signature.signature](https://github.com/apolloconfig/apollo/blob/aa184a2e11d6e7e3f519d860d69f3cf30ccfcf9c/apollo-core/src/main/java/com/ctrip/framework/apollo/core/signature/Signature.java#L22) |
-| Timestamp     | Number of milliseconds elapsed from `1970-1-1 00:00:00 UTC+0` to now | See [System.currentTimeMillis](https://docs.oracle.com/javase/7/docs/api/java/lang/System.html#currentTimeMillis()) |
+| Header        | Value                                                        | Remarks                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
+| ------------- | ------------------------------------------------------------ |----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| Authorization | Apollo ${appId}:${signature}                                 | appId: The appId of the application, signature: Generate a signature by combining the access key with the current timestamp in milliseconds, as well as the path and query components of the visited URL. The specific implementation can be found in [Signature.signature](https://github.com/apolloconfig/apollo/blob/aa184a2e11d6e7e3f519d860d69f3cf30ccfcf9c/apollo-core/src/main/java/com/ctrip/framework/apollo/core/signature/Signature.java#L22) |
+| Timestamp     | Number of milliseconds elapsed from `1970-1-1 00:00:00 UTC+0` to now | See [System.currentTimeMillis](https://docs.oracle.com/javase/7/docs/api/java/lang/System.html#currentTimeMillis())                                                                                                                                                                                                                                                                                                                                      |
 
 ## 1.6 Error Code Description