Added missing apostrophe

Author: imba-tjd

en/01-NginxVariables01.tut

@@ -183,7 +183,7 @@ around the variable name (excluding the C<$> prefix), as in C<${first}>. Let's
 test this sample:
 
     :bash
-    $ curl 'http://localhost:8080/test
+    $ curl 'http://localhost:8080/test'
     hello world
 
 == Variable Declaration and Creation ==

en/02-NginxDirectiveExecOrder01.tut

@@ -24,7 +24,7 @@ variable C<$a> has been reset after command L<ngx_echo/echo> "is
 executed". Really? the reality is:
 
     :bash
-    $ curl 'http://localhost:8080/test
+    $ curl 'http://localhost:8080/test'
     56
     56
 

zh-cn/01-NginxVariables01.tut

@@ -128,7 +128,7 @@ C<$> 字符给转义
 名围起来，比如这里的 C<${first}>. 上面这个例子的输出是：
 
     :bash
-    $ curl 'http://localhost:8080/test
+    $ curl 'http://localhost:8080/test'
     hello world
 
 L<ngx_rewrite/set> 指令（以及前面提到的 L<ngx_geo/geo>

zh-cn/02-NginxDirectiveExecOrder01.tut

@@ -25,7 +25,7 @@
 C<$a>. 然而不幸的是，事实并非如此：
 
     :bash
-    $ curl 'http://localhost:8080/test
+    $ curl 'http://localhost:8080/test'
     56
     56