[skip ci] Fix readme (#5959)

* [skip ci] fix readmecn
Signed-off-by: NLocoRichard <lichen.wang@zilliz.com>

* [skip ci] fix readme
Signed-off-by: NLocoRichard <lichen.wang@zilliz.com>

README.md

@@ -106,7 +106,7 @@ $ cd /home/$USER/milvus/
 $ ./scripts/install_deps.sh
 
 # Compile Milvus standalone.
-$ make standalone
+$ make milvus
 ```
 
 

README_CN.md

@@ -105,7 +105,7 @@ $ cd /home/$USER/milvus/
 $ ./scripts/install_deps.sh
 
 # Compile Milvus standalone.
-$ make standalone
+$ make milvus
 ```