Update build.rst

Author: joelvbernier

docs/build.rst

@@ -43,8 +43,8 @@ If you will be running scripts of you own, I also strongly suggest adding spyder
 For example, to buid an environment to run hexrd v0.6.x, do the following::
 
     conda create --name hexrd_0.6 cython h5py matplotlib numba numpy python=2.7 pyyaml setuptools scikit-image scikit-learn scipy spyder
-    conda install -c conda-forge --name hexrd_0.6 wxpython
-    conda install -c conda-forge --name hexrd_0.6 progressbar
+    conda install -c anaconda --name hexrd_0.6 wxpython
+    conda install -c anaconda --name hexrd_0.6 progressbar
     conda activate hexrd_0.6