Fix subproject typo in interpreter.py

Found by Coverity scan.
diff --git a/mesonbuild/interpreter/interpreter.py b/mesonbuild/interpreter/interpreter.py
index ef28d86..83363fb 100644
--- a/mesonbuild/interpreter/interpreter.py
+++ b/mesonbuild/interpreter/interpreter.py
@@ -3421,7 +3421,7 @@
 
             if kwargs['implib']:
                 if kwargs['export_dynamic'] is False:
-                    FeatureDeprecated.single_use('implib overrides explict export_dynamic off', '1.3.0', self.subprojct,
+                    FeatureDeprecated.single_use('implib overrides explict export_dynamic off', '1.3.0', self.subproject,
                                                  'Do not set ths if want export_dynamic disabled if implib is enabled',
                                                  location=node)
                 kwargs['export_dynamic'] = True