Fix missing keystroke in requirements (#5247)

ERROR: Invalid requirement: 'six=1.16.0'
Hint: = is not a valid operator. Did you mean == ?

Author: Blucknote

tools/macos/README.md

@@ -55,7 +55,7 @@ brew install gnu-tar
 # install pip
 sudo easy_install pip
 # install script prerequisites
-pip install docker==5.0.0 ansible==4.1.0 jinja2==3.0.1 couchdb==1.2 httplib2==0.19.1 requests==2.25.1 six=1.16.0
+pip install docker==5.0.0 ansible==4.1.0 jinja2==3.0.1 couchdb==1.2 httplib2==0.19.1 requests==2.25.1 six==1.16.0
 ```
 
 Make sure you correctly configure the environment variable $JAVA_HOME.
@@ -114,4 +114,4 @@ To run the unit tests execute the command bellow from the project's root folder:
 # go back to project's root folder
 cd ../
 ./gradlew -PtestSetName="REQUIRE_ONLY_DB" :tests:testCoverageLean 
-```
+```