ad6676: Fix doc

Signed-off-by: sarpadi <sergiu.arpadi@analog.com>

Author: sarpadi

docs/projects/ad6676evb/index.rst

@@ -48,9 +48,10 @@ Supported carriers
      - FMC HPC
 
 .. admonition:: Legend
-  :class: note
-  - ``*`` removed; last release that supports this project on this carrier is
-    :git-hdl:`hdl_2023_r2 <hdl_2023_r2:projects/ad6676_evb/vc707>`
+   :class: note
+
+   - ``*`` removed; last release that supports this project on this carrier is
+      :git-hdl:`hdl_2023_r2 <hdl_2023_r2:projects/ad6676_evb/vc707>`
 
 Block design
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