update default.xml.

fix ssh协议init后下载地址不正确的问题
Signed-off-by: Nmamingshuai <mamingshuai1@huawei.com>

default.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <manifest>
-  <remote fetch="../openharmony" name="origin" review="https://openharmony.gitee.com/openharmony/"/>
-  <remote fetch="../openharmony-sig" name="sig" review="https://openharmony.gitee.com/openharmony-sig/"/>
+  <remote fetch="." name="origin" review="https://openharmony.gitee.com/"/>
+  <remote fetch="." name="sig" review="https://openharmony.gitee.com/"/>
   <default remote="origin" revision="master" sync-j="4" />
 
   <project name="miscservices_inputmethod" path="base/miscservices/inputmethod" />