Further WIP improving docs

docs/designers/language-modifiers/index.md

@@ -97,7 +97,7 @@ These parameters follow the modifier name and are separated by a `:`
     > `{(8+2)|count_characters}`.
 
 - Custom modifiers can be registered
-    with the [`registerPlugin()`](../programmers/api-functions/api-register-plugin.md)
+    with the [`registerPlugin()`](../../programmers/api-functions/api-register-plugin.md)
     function.
 
 See also [`registerPlugin()`](../../programmers/api-functions/api-register-plugin.md), [combining

docs/designers/language-modifiers/language-modifier-from-charset.md

@@ -16,5 +16,5 @@ modifier](language-modifier-to-charset.md).
 > modifier should only be used in cases where the application cannot
 > anticipate that a certain string is required in another encoding.
 
-See also [Charset Encoding](../../programmers/charset.md), [to_charset
+See also [Configuring Smarty](../../api/configuring.md), [to_charset
 modifier](language-modifier-to-charset.md).

docs/designers/language-modifiers/language-modifier-to-charset.md

@@ -16,5 +16,5 @@ modifier](#language.modifier.from_charset).
 > modifier should only be used in cases where the application cannot
 > anticipate that a certain string is required in another encoding.
 
-See also [Charset Encoding](../../programmers/charset.md), [from_charset
+See also [Configuring Smarty](../../api/configuring.md), [from_charset
 modifier](language-modifier-from-charset.md).

docs/designers/language-variables/language-variables-smarty.md

@@ -66,8 +66,7 @@ difference.
 
 ## {$smarty.const}
 
-You can access PHP constant values directly. See also [smarty
-constants](../../programmers/smarty-constants.md).
+You can access PHP constant values directly.
 
 ```php
 <?php