[Card] Linkage fix

[xavArtley]

fix: #1750

[codecov]

Codecov Report

Merging #1753 (72b247c) into master (06530a0) will increase coverage by 0.31%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1753      +/-   ##
==========================================
+ Coverage   84.93%   85.25%   +0.31%     
==========================================
  Files         151      151              
  Lines       17420    17795     +375     
==========================================
+ Hits        14796    15171     +375     
  Misses       2624     2624              

Impacted Files	Coverage Δ
panel/layout/card.py	95.74% <100.00%> (ø)
panel/tests/test_server.py	100.00% <100.00%> (ø)
panel/pane/alert.py	100.00% <0.00%> (ø)
panel/tests/test_docs.py	100.00% <0.00%> (ø)
panel/tests/test_viewable.py	100.00% <0.00%> (ø)
panel/tests/pane/test_plot.py	100.00% <0.00%> (ø)
panel/tests/pane/test_image.py	100.00% <0.00%> (ø)
panel/tests/io/test_location.py	100.00% <0.00%> (ø)
panel/tests/io/test_notebook.py	100.00% <0.00%> (ø)
panel/tests/layout/test_base.py	100.00% <0.00%> (ø)
... and 71 more

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