[FIX] fix name of nimare to be pep 625 compliant (#917)

fix name of nimare to be pep 625 compliant

Author: jdkent

setup.py

@@ -6,7 +6,7 @@
 
 if __name__ == "__main__":
     setup(
-        name="NiMARE",
+        name="nimare",
         version=versioneer.get_version(),
         cmdclass=versioneer.get_cmdclass(),
         zip_safe=False,