corrected the typo in the installation command

sachinrawat2207 · web-flow · commit 44ac08a08e54 · 2023-10-02T17:49:58.000+05:30
diff --git a/docs/source/installation.rst b/docs/source/installation.rst
@@ -19,7 +19,7 @@ mpi4py-fft, with all the above dependencies, is
 
 ::
 
-    conda install -c conda-forge mpifpy-fft h5py=*=mpi*
+    conda install -c conda-forge mpi4py-fft h5py=*=mpi*
 
 You probably want to install into a fresh environment, though, which
 can be achieved with
