Merge pull request xtensor-stack#289 from k-dominik/patch-1

fixed typo

Author: JohanMabille

docs/source/installation.rst

@@ -27,7 +27,7 @@ Besides the xtendor-python headers, all these methods place the `cmake` project
 
 .. image:: conda.svg
 
-Using the conda-fore package
+Using the conda-forge package
 ----------------------------
 
 A package for xtensor-python is available on the mamba (or conda) package manager.