Merge pull request #314 from arduino/taddy/memory-guide-typo-correction

Memory Guide MD Small Update

Author: jhansson-ard

content/learn/03.programming/06.memory-guide/memory-guide.md

@@ -413,7 +413,7 @@ The following table shows basic value data types in Arduino:
 |    `boolean`    |        1        | Limited to logic true and false |
 |      `char`     |        1        |           -128 to 127           |
 | `unsigned char` |        1        |             0 to 255            |
-|      `byte`     |        1        |             o to 255            |
+|      `byte`     |        1        |             0 to 255            |
 |      `int`      |        2        |        -32,768 to 32,767        |
 |  `unsigned int` |        2        |           0 to 65,535           |
 |      `word`     |        2        |           0 to 65,535           |