Fix some broken links

Author: bbatsov

doc/configuration/eldoc.md

@@ -8,7 +8,7 @@
 (add-hook 'cider-mode-hook #'eldoc-mode)
 ```
 
-![Eldoc](images/eldoc.png)
+![Eldoc](../images/eldoc.png)
 
 * CIDER also would show the eldoc for the symbol at point. So in `(map inc ...)`
 when the cursor is over `inc` its eldoc would be displayed. You can turn off this

doc/configuration/syntax_highlighting.md

@@ -13,18 +13,18 @@ and variables from any namespace, do:
 
 Here's how code looks without dynamic syntax highlighting.
 
-![Dynamic Font-lock Off](images/dynamic_font_lock_off.png)
+![Dynamic Font-lock Off](../images/dynamic_font_lock_off.png)
 
 And here's how to the code looks when it's turned on.
 
-![Dynamic Font-lock On](images/dynamic_font_lock_on.png)
+![Dynamic Font-lock On](../images/dynamic_font_lock_on.png)
 
 ## Syntax highlighting for reader conditionals
 
 By default CIDER will apply font-locking to unused reader conditional
 expressions depending on the buffer CIDER connection type.
 
-![Reader Conditionals](images/reader_conditionals.png)
+![Reader Conditionals](../images/reader_conditionals.png)
 
 You can disable this behavior by adjusting `cider-font-lock-reader-conditionals`: