fix bottom margin of shared pdfviewer links

[jancborchardt]

Before & after:

Note the double scrollbar and white bottom margin there ^

Please review @nextcloud/designers

[mention-bot]

@jancborchardt, thanks for your PR! By analyzing the history of the files in this pull request, we identified @skjnldsv to be a potential reviewer.

[codecov-io]

Codecov Report

Merging #3568 into master will increase coverage by 0.43%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #3568      +/-   ##
============================================
+ Coverage     54.28%   54.71%   +0.43%     
- Complexity    21061    21445     +384     
============================================
  Files          1310     1310              
  Lines         80354    81626    +1272     
  Branches       1250     1250              
============================================
+ Hits          43621    44663    +1042     
- Misses        36733    36963     +230

Impacted Files	Coverage Δ	Complexity Δ
apps/user_ldap/lib/Proxy.php	35.1% <ø> (-13.43%)	29% <ø> (+8%)
lib/private/Files/Cache/Wrapper/CacheJail.php	85% <ø> (-2.35%)	54% <ø> (+18%)
lib/private/Setup.php	12.88% <ø> (-0.12%)	49% <ø> (ø)
apps/files_external/lib/Command/Notify.php	0% <ø> (ø)	37% <ø> (ø)	❌
settings/templates/users/main.php	0% <ø> (ø)	0% <ø> (ø)	❌
lib/private/Federation/CloudIdManager.php	100% <ø> (ø)	27% <ø> (+12%)	✅
apps/federatedfilesharing/lib/Notifier.php	0% <ø> (ø)	25% <ø> (+1%)	✅
apps/files/lib/AppInfo/Application.php	0% <ø> (ø)	2% <ø> (ø)	❌
lib/private/Server.php	92.78% <ø> (+0.17%)	120% <ø> (ø)	❌
apps/files_external/lib/Lib/Storage/SMB.php	47.22% <ø> (+0.39%)	112% <ø> (ø)	❌
... and 10 more

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[MorrisJobke]

Perfect! Works 👍

[MorrisJobke]

Perfect! Works 👍