Update multi r compilation

Author: avinab-neogy

docs/tutorials/multi_r_compilation.md

@@ -76,18 +76,15 @@ Enter the number corresponding to the selected version:
 
 !!! Note
     `BUILDDIR` and `TOP_SRCDIR` will be set to the defaults using the label
-    `r-devel`
-    whenever a new bash terminal is opened, e.g. when the codespace is
-    restarted.
-    Whenever following instructions that use these variables to refer
-    to the build
-    and source directory, be sure they are pointing to the desired
-    version!
+    `r-devel` whenever a new bash terminal is opened, e.g. when the codespace
+    is restarted. Whenever following instructions that use these variables to 
+    refer to the build and source directory, be sure they are pointing to the
+    desired version!
     You can check the values any time with
 
-      ```bash
-      echo $BUILDDIR
-      echo $TOP_SRCDIR
-      ```
-
+    ```bash
+    echo $BUILDDIR
+    echo $TOP_SRCDIR
+    ```
+    
     and switch with `set_build_r <name>`.