Correct typo in class name

GiacomoPope · GiacomoPope · commit 213a9dce493d · 2023-08-11T07:46:44.000+01:00
diff --git a/src/sage/rings/polynomial/polynomial_zz_pex.pxd b/src/sage/rings/polynomial/polynomial_zz_pex.pxd
@@ -6,6 +6,6 @@ ctypedef ZZ_pEContext_ptrs *cparent
 
 include "polynomial_template_header.pxi"
 
-cdef class Polynomial_ZZ_pX(Polynomial_template):
+cdef class Polynomial_ZZ_pEX(Polynomial_template):
     pass
 
