Further clarify circle behavior

Common/src/main/resources/assets/hexcasting/lang/en_us.flatten.json5

@@ -1558,7 +1558,7 @@
 
       spellcircles: {
         "1": "I KNOW what the $(l:items/slate)$(item)slates/$ are for. The grand assemblies lost to time. The patterns scribed on them can be actuated in sequence, automatically. Thought and power ricocheting through, one by one by one by one by one by through and through and THROUGH AND -- I must not I must not I should know better than to think that way.",
-        "2": "To start the ritual I need an $(l:greatwork/impetus)$(item)Impetus/$ to create a self-sustaining wave of _media. That wave travels along a track of $(l:items/slate)$(item)slates/$ or other blocks suitable for the energies, one by one, casting any patterns it finds.$(br2)The direction the _media exits any given block MUST be unambiguous, or the casting will fail at the block with too many neighbors.",
+        "2": "To start the ritual I need an $(l:greatwork/impetus)$(item)Impetus/$ to create a self-sustaining wave of _media. That wave travels along a track of $(l:items/slate)$(item)slates/$ or other suitable blocks, casting any patterns it finds.$(br2)If there is no way for the wave to return to the $(l:greatwork/impetus)$(item)Impetus/$, the casting will fail immediately. Also, the direction the wave exits any given block MUST be unambiguous, or the casting will fail at the block with too many neighbors.",
         "3": "As a result, the outline of the spell \"circle\" may be any closed shape, concave or convex, and it may face any direction. In fact, with the application of certain other blocks it is possible to make a spell circle that spans all three dimensions. I doubt such an oddity has very much use, but I must allocate myself a bit of vapid levity to encourage my crude mind to continue my work.",
         "4": "Miracle of miracles, the circle will withdraw _media neither from my inventory nor my mind. Instead, crystallized shards of _media must be provided to the $(l:greatwork/impetus)$(item)Impetus/$ via hopper, or other such artifice.$(br2)The application of a $(l:items/lens)$(item)Scrying Lens/$ will show how much _media is inside an $(l:greatwork/impetus)$(item)Impetus/$, in units of dust.",
         "5": "However, a spell cast from a circle does have one major limitation: it is unable to affect anything outside of the circle's bounds. That is, it cannot interact with anything outside of the cuboid of minimum size which encloses every block composing it (so a concave spell circle can still affect things in the concavity).",