Align tftest syntax with tdoc

This commit changes the token separator for inline examples from a
semicolon to a space

modules/secret-manager/README.md

@@ -21,7 +21,7 @@ module "secret-manager" {
     test-manual = ["europe-west1", "europe-west4"]
   }
 }
-# tftest:modules=1:resources=2
+# tftest modules=1 resources=2
 ```
 
 ### Secret IAM bindings
@@ -45,7 +45,7 @@ module "secret-manager" {
     }
   }
 }
-# tftest:modules=1:resources=4
+# tftest modules=1 resources=4
 ```
 
 ### Secret versions
@@ -70,7 +70,7 @@ module "secret-manager" {
     }
   }
 }
-# tftest:modules=1:resources=5
+# tftest modules=1 resources=5
 ```
 <!-- BEGIN TFDOC -->