--- a/xml/en/docs/control.xml
+++ b/xml/en/docs/control.xml
@@ -11,7 +11,7 @@ nginx can be controlled with signals.
 The process ID of the master process is written to the file
 <path>/usr/local/nginx/logs/nginx.pid</path> by default.
 This name may be changed at configuration time, or in
-<path>nginx.conf</path> using the 
+<path>nginx.conf</path> using the
 <link doc="ngx_core_module.xml" id="pid"/>
 directive.
 The master process supports the following signals:

--- a/xml/en/docs/http/ngx_http_limit_req_module.xml
+++ b/xml/en/docs/http/ngx_http_limit_req_module.xml
@@ -102,7 +102,7 @@ desired, the parameter <literal>nodelay<
 
 <para>
 Sets the desired logging level for cases when the server limits
-the number of requests, or delays request processing. 
+the number of requests, or delays request processing.
 Delays are logged with the level one less than limits; for example,
 if “<literal>limit_req_log_level notice</literal>” is specified,
 delays are logged with the <literal>info</literal> level.
@@ -123,7 +123,7 @@ delays are logged with the <literal>info
 Sets the parameters for a zone that keeps states for various keys.
 This state stores the current number of requests in particular.
 The key is the value of the specified variable.
-Example usage: 
+Example usage:
 <example>
 limit_req_zone $binary_remote_addr zone=one:10m rate=1r/s;
 </example>

--- a/xml/ru/docs/http/ngx_http_referer_module.xml
+++ b/xml/ru/docs/http/ngx_http_referer_module.xml
@@ -43,7 +43,7 @@
 
 <directive name="valid_referers">
 <syntax>
-  <literal>none</literal> | 
+  <literal>none</literal> |
   <literal>blocked</literal> |
   <literal>server_names</literal> |
   <value>строка</value>