schemeedit: Minor change in Slovenian translation (O -> o)

Author: janezd

i18n/si/msgs.jaml

@@ -1889,7 +1889,7 @@ document/schemeedit.py:
             Add a text annotation to the workflow.: V delotok dodaj besedilno oznako.
             Font Size: Velikost pisave
             %ipx: false
-            Text Annotation: Besedilna Oznaka
+            Text Annotation: Besedilna oznaka
             new-quick-text-annotation-action: false
             Arrow: Puščica
             new-arrow-action: false