Update ssl_ca.md

ssl_ca.md

 #SSL_CA 安装
 - 生成私钥申请CA：
+    
         参考http://docs.aliyun.com/?spm=5176.7189909.0.0.H2Ofhg#/pub/slb/faq/cert-faq
 
 - 登陆godaddy.com下载CA证书
 
 - 解压CA包： 
+    
         unzip XXXX.zip
         ls 
         eae08d8596e983ce.crt    gd_bundle-g2-g1.crt
         
 - 验证CA证书(错误可忽略)： 
+    
         openssl verify  gd_bundle-g2-g1.crt
         gd_bundle-g2-g1.crt: /C=US/ST=Arizona/L=Scottsdale/O=GoDaddy.com, Inc./OU=http://certs.godaddy.com/repository//CN=Go Daddy Secure Certificate Authority - G2
         error 20 at 0 depth lookup:unable to get local issuer certificate
@@ -25,11 +28,13 @@
         eae08d8596e983ce.crt: OK
 
 - 转换CA证书格式：
+    
         openssl x509 -in gd_bundle-g2-g1.crt -out  gengmei_gd.pem
         openssl x509 -in eae08d8596e983ce.crt -out  gengmei_cc.pem
         cat gengmei_cc.pem  gengmei_gd.pem  >  gengmei_ca.pem
 
 - 验证CA证书：
+    
         openssl x509 -x509toreq -in  gengmei_ca.pem  -out gengmei.csr  -signkey gengmei.key
         Getting request Private Key
         Enter pass phrase for gengmei.key:
@@ -37,10 +42,12 @@
         Generating certificate request
 
 - 转换私钥证书格式（可选）：
+    
         openssl rsa -in gengmei.key -text > gengmei_pri.pem
         Enter pass phrase for gengmei.key:
         ＃输入创建私钥的密码
         writing RSA key
 
-- 在负载均衡SLB上创建证书
+- 在负载均衡SLB上创建证书：
+    
         参考http://docs.aliyun.com/?spm=5176.7189909.0.0.H2Ofhg#/pub/slb/faq/cert-faq
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