Fix typos and error message when no items are found in the showcase
What kind of change does this PR introduce? (check one with "x")
[] Bugfix
[] Feature
[] Code style update (formatting, local variables)
[] Refactoring (no functional changes, no api changes)
[X] Other... Please describe: Fixing typos and an error message that has the "old" name of the Showcase
Fix typos and error message when no items are found in the showcase
What kind of change does this PR introduce? (check one with "x")