update dev install instruction

Author: oscarwumit

documentation/source/users/rmg/installation/anacondaDeveloper.rst

@@ -110,9 +110,9 @@ Installation by Source Using Anaconda Environment for Unix-based Systems: Linux
 
     conda activate rmg_env
 
-#. Switch the conda solver to libmamba again, to accelerate any changes you might make to this conda environment in the future::
+#. Switch the conda solver back to default, to avoid potential conflicts with Julia commands below::
 
-    conda config --set solver libmamba
+    conda config --set solver classic
 
 #. Compile RMG-Py after activating the conda environment ::
 
@@ -136,7 +136,7 @@ Installation by Source Using Anaconda Environment for Unix-based Systems: Linux
 
 #. Install and Link Julia dependencies: ::
 
-     julia -e 'using Pkg; Pkg.add("PyCall");Pkg.build("PyCall");Pkg.add(PackageSpec(name="ReactionMechanismSimulator",rev="main")); using ReactionMechanismSimulator;'
+     julia -e 'using Pkg; Pkg.add("PyCall");Pkg.build("PyCall");Pkg.add(PackageSpec(name="ReactionMechanismSimulator",rev="for_rmg")); using ReactionMechanismSimulator;'
 
      python -c "import julia; julia.install(); import diffeqpy; diffeqpy.install()"