[iotdb] branch research/M4-visualization updated: Update README.md

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leirui pushed a commit to branch research/M4-visualization
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The following commit(s) were added to refs/heads/research/M4-visualization by this push:
     new 765ef2929e Update README.md
765ef2929e is described below

commit 765ef2929ec51041579cb3ced8693d03aa25038c
Author: Rui,Lei <33...@users.noreply.github.com>
AuthorDate: Wed Nov 30 05:51:58 2022 +0800

    Update README.md
---
 README.md | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index e572d19ef3..ef776b0b18 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,8 @@
 # M4-LSM 
 - The code of two M4-LSM deployments, M4-UDF and M4-LSM, is available in this repository.
-    - M4-UDF: `org.apache.iotdb.db.query.udf.builtin.UDTFM4MAC`.  
+    - M4-UDF: [`org.apache.iotdb.db.query.udf.builtin.UDTFM4MAC`](https://github.com/apache/iotdb/blob/research%2FM4-visualization/server/src/main/java/org/apache/iotdb/db/query/udf/builtin/UDTFM4MAC.java).  
     The document of the M4 aggregation function (implemented as a UDF based on MA) has been released on the official [website](https://iotdb.apache.org/UserGuide/Master/UDF-Library/M4.html#m4-2) of Apache IoTDB.
-    - M4-LSM: `org.apache.iotdb.db.query.dataset.groupby.LocalGroupByExecutor4CPV`
-    - Some integration tests for correctness are in `org.apache.iotdb.db.integration.m4.MyTest1/2/3/4`.
+    - M4-LSM: [`org.apache.iotdb.db.query.dataset.groupby.LocalGroupByExecutor4CPV`](https://github.com/apache/iotdb/blob/research%2FM4-visualization/server/src/main/java/org/apache/iotdb/db/query/dataset/groupby/LocalGroupByExecutor4CPV.java)
+    - Some integration tests for correctness are in [`org.apache.iotdb.db.integration.m4.MyTest1~4`](https://github.com/apache/iotdb/blob/research%2FM4-visualization/server/src/test/java/org/apache/iotdb/db/integration/m4/MyTest1.java).
 - The experiment-related code, data and scripts are in [another GitHub repository](https://github.com/LeiRui/M4-visualization-exp.git) for easier reproducibility.
 - For the README of Apache IoTDB itself, please see [README_IOTDB.md](README_IOTDB.md).