fix: labels and translations (#34896)

* fix: german translation of expense claim

* fix: consistent labels and translations in project Costing and Billing

* fix: german translation of Stock Entry

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Co-authored-by: Deepesh Garg <deepeshgarg6@gmail.com>
diff --git a/erpnext/translations/sr_sp.csv b/erpnext/translations/sr_sp.csv
index 5e7ae79..c121e6a 100644
--- a/erpnext/translations/sr_sp.csv
+++ b/erpnext/translations/sr_sp.csv
@@ -897,7 +897,7 @@
 Task Progress,% završenosti zadataka,
 % Completed,% završen,
 Project will be accessible on the website to these users,Projekat će biti dostupan na sajtu sledećim korisnicima,
-Total Billed Amount (via Sales Invoices),Ukupno fakturisano (putem fakture prodaje),
+Total Billed Amount (via Sales Invoice),Ukupno fakturisano (putem fakture prodaje),
 Projects Manager,Projektni menadžer,
 Project User,Projektni user,
 Weight,Težina,