Update HistoryMechanism.tid (#4731)

editions/tw5.com/tiddlers/mechanisms/HistoryMechanism.tid

@@ -13,7 +13,7 @@ The history list also maintains the field ''current-tiddler'' that contains the
 ```
 <$list filter="[list[$:/StoryList]]" history="$:/HistoryList" storyview="pop">
 
-<$button message="tm-close-tiddler" class="tc-btn-invisible tc-btn-mini">&times;</$button> <$link to={{!!title}}><$view field="title"/> <$reveal type="match" state="$:/HistoryList!!current-tiddler" text=<<currentTiddler>>>&#x2713;</$reveal></$link>
+<$button message="tm-close-tiddler" class="tc-btn-invisible tc-btn-mini">&times;</$button> <$link><$view field="title"/> <$reveal type="match" state="$:/HistoryList!!current-tiddler" text=<<currentTiddler>>>&#x2713;</$reveal></$link>
 
 </$list>
 ```
@@ -22,7 +22,7 @@ Which renders the same as the "Open" sidebar tab, with the addition of a tick ag
 
 <$list filter="[list[$:/StoryList]]" history="$:/HistoryList" storyview="pop">
 
-<$button message="tm-close-tiddler" class="tc-btn-invisible tc-btn-mini">&times;</$button> <$link to={{!!title}}><$view field="title"/> <$reveal type="match" state="$:/HistoryList!!current-tiddler" text=<<currentTiddler>>>&#x2713;</$reveal></$link>
+<$button message="tm-close-tiddler" class="tc-btn-invisible tc-btn-mini">&times;</$button> <$link><$view field="title"/> <$reveal type="match" state="$:/HistoryList!!current-tiddler" text=<<currentTiddler>>>&#x2713;</$reveal></$link>
 
 </$list>
 
@@ -32,4 +32,4 @@ To display content when the story is empty, create $:/config/EmptyStoryMessage a
 
 ```
 {{GettingStarted||$:/core/ui/ViewTemplate}}
-```
+```