patch 8.2.0129: MS-Windows installer doesn't use Turkish translations

Problem:    MS-Windows installer doesn't use Turkish translations.
Solution:   Enable the Turkish translations and fix a few. (Emir Sarı,
            closes #5493)
diff --git a/nsis/gvim.nsi b/nsis/gvim.nsi
index ed53ab5..d782e43 100644
--- a/nsis/gvim.nsi
+++ b/nsis/gvim.nsi
@@ -176,6 +176,7 @@
     !include "lang\japanese.nsi"
     !include "lang\simpchinese.nsi"
     !include "lang\tradchinese.nsi"
+    !include "lang\turkish.nsi"
 !endif
 
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