fix minor typo and inaccessible link (#1095)

## Changes

Adds missing period.  
Hardcoded the multithreading link; Not sure why the original leads to
`https://prod.docsiteassets.roblox.com/scripting/multithreading.md`,
which is inaccessible.

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---------

Co-authored-by: IgnisRBX <[email protected]>

Author: charleskimbac

content/en-us/projects/data-model.md

@@ -241,7 +241,7 @@ clients, which allows you to have secure, server-side logic.
 can use this container to store objects that you want to clone and parent to the
 workspace or other containers at runtime. For example, you can store large
 objects such as maps in this container until they are needed and move them into
-the workspace only when required This lets you decrease client network traffic
+the workspace only when required. This lets you decrease client network traffic
 on initial join.
 
 <Alert severity="info">

content/en-us/scripting/multithreading.md

@@ -33,7 +33,7 @@ For most situations, you shouldn't put an actor as a child of another actor in t
 
 ### Desynchronize threads
 
-Though putting scripts under actors grants them the capability for parallel execution, by default the code still runs on the single thread serially, which doesn't improve the runtime performance. You need to call the `Library.task.desynchronize()`, a yieldable function that suspends the execution of the current coroutine for running code in parallel and resumes it at the next parallel execution opportunity. To switch a script back to serial execution, call `Library.task.synchronize()`.
+Though putting scripts under actors grants them the capability for parallel execution, by default the code still runs on the single thread serially, which doesn't improve the runtime performance. You need to call `Library.task.desynchronize()`, a yieldable function that suspends the execution of the current coroutine for running code in parallel and resumes it at the next parallel execution opportunity. To switch a script back to serial execution, call `Library.task.synchronize()`.
 
 Alternatively, you can use `Datatype.RBXScriptSignal:ConnectParallel()` method when you want to schedule a signal callback to immediately run your code in parallel upon triggering. You don't need to call `Library.task.desynchronize()` inside the signal callback.