use #!/usr/bin/env bash and fix doc

README-CN.md

@@ -45,7 +45,7 @@ sh /usr/local/oceanbase-diagnostic-tool/init.sh
 
 ```shell
 pip3 install -r requirements3.txt
-sh dev_init.sh
+./dev_init.sh
 source ~/.bashrc
 ```
 

README.md

@@ -45,7 +45,7 @@ To install obdiag on Python >= 3.8, run these commands:
 
 ```shell
 pip3 install -r requirements3.txt
-sh dev_init.sh
+./dev_init.sh
 source ~/.bashrc
 ```
 

dev_init.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 PROJECT_PATH=$(cd "$(dirname "$0")"; pwd)
 WORK_DIR=$(readlink -f "$(dirname ${BASH_SOURCE[0]})")

init.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 if [[ $# == 1 && $1 == "-f" ]]; then
     FORCE_DEPLOY="1"

rpm/build.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 python_bin='python'
 W_DIR=`pwd`

rpm/obdiag-build.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 PROJECT_DIR=$1
 PROJECT_NAME=$2