change the default paramters of xray module

pcigale/sed_modules/xray.py

@@ -31,7 +31,7 @@ class Xray(SedModule):
         ("gam", (
             "cigale_list()",
             "The photon index (Gamma) of intrinsic X-ray spectrum.",
-            1.6
+            1.7
         )),
         ("max_dev_alpha_ox", (
             "cigale_list()",
@@ -41,7 +41,7 @@ class Xray(SedModule):
             "defined as alpha_ox = 0.3838*log(Lnu_2keV/Lnu_2500A), "
             "which is often modeled as a function of Lnu_2500A."
             "The alpha_ox-Lnu_2500A relation has a 1-sigma scatter of ~ 0.1.",
-            0.3
+            0.2
         ))
     ])