Backport PR pandas-dev#49993 on branch 1.5.x (Add new mamba environment creation command) (pandas-dev#50420)

Backport PR pandas-dev#49993: Add new mamba environment creation command

Co-authored-by: Emma Carballal Haire <[email protected]>

Author: meeseeksmachine

doc/source/development/contributing_environment.rst

@@ -107,7 +107,7 @@ We'll now kick off a three-step process:
 .. code-block:: none
 
    # Create and activate the build environment
-   mamba env create
+   mamba env create --file environment.yml
    mamba activate pandas-dev
 
    # Build and install pandas