Fix Codespell complaints

Author: khoih-prog

README.md

@@ -95,7 +95,7 @@ For example, Teensy 4.x, with **super-high clock frequency of 600MHz and Timer1
 
 For Teensy 4.x, this library will be expanded to use other available hardware timers, such as **FTM, GPT, QUAD, PIT**, in addition to current **Timer1 and Timer3**.
 
-Now with these new **16 ISR-based timers**, the maximum interval is **practically unlimited** (limited only by unsigned long miliseconds) while **the accuracy is nearly perfect** compared to software timers. 
+Now with these new **16 ISR-based timers**, the maximum interval is **practically unlimited** (limited only by unsigned long milliseconds) while **the accuracy is nearly perfect** compared to software timers. 
 
 The most important feature is they're ISR-based timers. Therefore, their executions are **not blocked by bad-behaving functions / tasks**. This important feature is absolutely necessary for mission-critical tasks. 
 
@@ -314,7 +314,7 @@ You'd certainly experienced that if using other Hardware Timer Libraries, such a
 
 For example, Teensy 4.x, with **super-high clock frequency of 600MHz and Timer1 and Timer3 clock of 150MHz, the maximum interval / frequency is only 55922.3467 us / 17.881939 Hz**. This [**Teensy_TimerInterrupt library**](https://github.com/khoih-prog/Teensy_TimerInterrupt) will provide you up to 16 super-long (**ulong millisecs**) ISR Timers for each used Timer1 or Timer3.
 
-Now with these new `16 ISR-based timers` (while consuming only **1 hardware timer**), the maximum interval is practically unlimited (limited only by unsigned long miliseconds). The accuracy is nearly perfect compared to software timers. The most important feature is they're ISR-based timers Therefore, their executions are not blocked by bad-behaving functions / tasks.
+Now with these new `16 ISR-based timers` (while consuming only **1 hardware timer**), the maximum interval is practically unlimited (limited only by unsigned long milliseconds). The accuracy is nearly perfect compared to software timers. The most important feature is they're ISR-based timers Therefore, their executions are not blocked by bad-behaving functions / tasks.
 This important feature is absolutely necessary for mission-critical tasks. 
 
 The `ISR_Timer_Complex` example will demonstrate the nearly perfect accuracy compared to software timers by printing the actual elapsed millisecs of each type of timers.