Help users that copy and paste instructions to install esp32 easier o…

…r switch between versions. (#2664)

Sming/Arch/Esp32/README.rst

@@ -108,7 +108,7 @@ Sming currently supports IDF versions 4.3, 4.4 and 5.0.
 
 The default installed IDF version is 4.4. This can be changed as follows::
 
-    INSTALL_IDF_VER=5.0 $SMING_HOME/../Tools/install.sh
+    INSTALL_IDF_VER=5.0 $SMING_HOME/../Tools/install.sh esp32
 
 The installation script creates a soft-link in ``/opt/esp-idf`` pointing to the last version installed.
 Use the `IDF_PATH` environment variable or change the soft-link to select which one to use.
@@ -120,8 +120,8 @@ After switching versions, run `make clean components-clean` before re-compiling.
   Currently, switching from version 4.x to 5.0 or vice-versa requires an additional step
   as they use different versions of the 'pyparsing' Python library.
 
-  If moving from IDF 4.x to 5.0:	`python -m pip install --upgrade pyparsing`
-  Moving from IDF 5.0 to 4.x: `python -m pip install pyparsing\<2.4`
+  If moving from IDF 4.x to 5.0:	``python -m pip install --upgrade pyparsing``
+  Moving from IDF 5.0 to 4.x: ``python -m pip install 'pyparsing<2.4'``
 
 
 Components