Docs: Fix some typos

docs/lang/literals.md

@@ -21,7 +21,7 @@ It is not allowed in any other places.
 
 String literals can be used as either array initializers or expressions of type `pointer`.
 
-String literals are equivalent to constanr arrays. Writing to them via their pointer is undefined behaviour.
+String literals are equivalent to constant arrays. Writing to them via their pointer is undefined behaviour.
 
 If a string literal is used as an expression, then the text data will be located in the default code segment,
 regardless of which code segment the current function is located it. This may be subject to change in future releases.
@@ -97,7 +97,7 @@ You can create a constant of a given struct type by listing constant values of f
     point(5,6)
     
 
-## Array initialisers 
+## Array initializers 
 
 An array is initialized with either:
 

docs/lang/text.md

@@ -94,7 +94,7 @@ Encoding | lowercase letters | backslash | pound | yen | katakana | card suits
 `msx_ru`           | yes  | yes | no  | no   | no   | yes   
 all the rest       | yes  | yes | no  | no   | no   | no  
   
-1. `pet`, `origpet` and petscr` cannot display card suit symbols and lowercase letters at the same time.
+1. `pet`, `origpet` and `petscr` cannot display card suit symbols and lowercase letters at the same time.
 Card suit symbols are only available in graphics mode,
 in which lowercase letters are displayed as uppercase and uppercase letters are displayed as symbols. 
 
@@ -110,7 +110,7 @@ then text and character literals containing lowercase letters are automatically
 ##### Escape sequence availability
 
 Encoding | new line | braces | backspace | cursor movement | text colour | reverse | background colour  
---|--|--|--|--|--|--  
+--|--|--|--|--|--|--|--  
 `pet`,`petjp`       | yes | no  | no  | yes | yes | yes | no  
 `origpet`           | yes | no  | no  | yes | no  | yes | no  
 `oldpet`            | yes | no  | no  | yes | no  | yes | no  

docs/lang/types.md

@@ -122,7 +122,7 @@ then the enumeration is considered _plain_. Plain enumeration types can be used
 For plain enumerations, a constant `<name>.count` is defined,
 equal to the number of variants in the enumeration.
 
-Assigment between numeric types and enumerations is not possible without an explicit type cast:
+Assignment between numeric types and enumerations is not possible without an explicit type cast:
 
     enum E { EA, EB }
     byte b