C# remove spurious spaces in <code> tag

Author: intrigus-lgtm

csharp/ql/src/Input Validation/ValueShadowingServerVariable.qhelp

@@ -6,7 +6,7 @@
 <p>Relying on <code>HttpRequest</code> to provide access to a particular server variable is not 
 safe as it can be overridden by the client. The <code>HttpRequest</code> class implements an 
 indexer to provide a simplified, combined access to its <code>QueryString</code>, <code>Form</code>
-, <code>Cookies</code>, or <code> ServerVariables</code> collections, in that particular order. 
+, <code>Cookies</code>, or <code>ServerVariables</code> collections, in that particular order. 
 When searching for a variable, the first match is returned: <code>QueryString</code> parameters 
 hence supersede values from forms, cookies and server variables, and so on. This is a serious 
 attack vector since an attacker could inject a value in the query string that you do not expect,