Update Building-in-Mac-OSX.md

docs/development/building/Building-in-Mac-OSX.md

@@ -54,7 +54,7 @@ To install the needed compiler you just need to enter the betaflight directory a
 
 ## Build the code
 
-Enter the betaflight directory and run `make configs` to retrieve board targets then `make TARGET=MATEKH743` to
+Enter the betaflight directory and run `make configs` to retrieve board targets then `make MATEKH743` to
 build firmware for the BETAFLIGHTF4. When the build completes, the .hex firmware should be available as
 `obj/betaflight_4.4.2_MATEKH743.hex` for you to flash using the Betaflight Configurator.
 
@@ -68,6 +68,6 @@ changes from the repository, then rebuild the firmware:
 git reset --hard
 git pull
 
-make clean TARGET=MATEKH743
-make TARGET=MATEKH743
+make clean
+make MATEKH743
 ```