Fix typos in reference (#3979)

docs/manual/src/docs/asciidoc/index.adoc

@@ -725,10 +725,10 @@ protected void configure(HttpSecurity http) throws Exception {
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 <1> Provides logout support. This is automatically applied when using `WebSecurityConfigurerAdapter`.
-<2> The URL that triggers log out to occur (default is `/logout`). If CSRF protection is enabled (default), then the request must also be a POST. For for information, please consult the {security-api-url}org/springframework/security/config/annotation/web/configurers/LogoutConfigurer.html#logoutUrl(java.lang.String)[JavaDoc].
-<3> The URL to redirect to after logout has occurred. The default is `/login?logout`. For for information, please consult the {security-api-url}org/springframework/security/config/annotation/web/configurers/LogoutConfigurer.html#logoutSuccessUrl(java.lang.String)[JavaDoc].
-<4> Let's you specify a custom `LogoutSuccessHandler`. If this is specified, `logoutSuccessUrl()` is ignored. For for information, please consult the {security-api-url}org/springframework/security/config/annotation/web/configurers/LogoutConfigurer.html#logoutSuccessHandler(org.springframework.security.web.authentication.logout.LogoutSuccessHandler)[JavaDoc].
-<5> Specify whether to invalidate the `HttpSession` at the time of logout. This is *true* by default. Configures the `SecurityContextLogoutHandler` under the covers.  For for information, please consult the {security-api-url}org/springframework/security/config/annotation/web/configurers/LogoutConfigurer.html#invalidateHttpSession(boolean)[JavaDoc].
+<2> The URL that triggers log out to occur (default is `/logout`). If CSRF protection is enabled (default), then the request must also be a POST. For more information, please consult the {security-api-url}org/springframework/security/config/annotation/web/configurers/LogoutConfigurer.html#logoutUrl(java.lang.String)[JavaDoc].
+<3> The URL to redirect to after logout has occurred. The default is `/login?logout`. For more information, please consult the {security-api-url}org/springframework/security/config/annotation/web/configurers/LogoutConfigurer.html#logoutSuccessUrl(java.lang.String)[JavaDoc].
+<4> Let's you specify a custom `LogoutSuccessHandler`. If this is specified, `logoutSuccessUrl()` is ignored. For more information, please consult the {security-api-url}org/springframework/security/config/annotation/web/configurers/LogoutConfigurer.html#logoutSuccessHandler(org.springframework.security.web.authentication.logout.LogoutSuccessHandler)[JavaDoc].
+<5> Specify whether to invalidate the `HttpSession` at the time of logout. This is *true* by default. Configures the `SecurityContextLogoutHandler` under the covers.  For more information, please consult the {security-api-url}org/springframework/security/config/annotation/web/configurers/LogoutConfigurer.html#invalidateHttpSession(boolean)[JavaDoc].
 <6> Adds a `LogoutHandler`. `SecurityContextLogoutHandler` is added as the last `LogoutHandler` by default.
 <7> Allows specifying the names of cookies to be removed on logout success. This is a shortcut for adding a `CookieClearingLogoutHandler` explicitly.