includes: Fix various spelling errors (#270)

docs: fix some spelling errors

Related issue:
https://github.com/WerWolv/ImHex/issues/1139

includes/std/core.pat

@@ -56,17 +56,17 @@ namespace auto std::core {
 
 
     /**
-        Sets the current default endianess.
-        Any patterns created following this attribute will be created using the set endianess.
-        @param endian The new default endianess
+        Sets the current default endianness.
+        Any patterns created following this attribute will be created using the set endianness.
+        @param endian The new default endianness
     */
     fn set_endian(std::mem::Endian endian) {
         builtin::std::core::set_endian(u32(endian));
     };
 
     /**
-        Gets the current default endianess.
-        @return The currently set default endianess
+        Gets the current default endianness.
+        @return The currently set default endianness
     */
     fn get_endian() {
         return builtin::std::core::get_endian();

includes/std/mem.pat

@@ -29,7 +29,7 @@ namespace auto std::mem {
     using Section = u128;
 
     /**
-        The Endianess of a value
+        The endianness of a value
      */
     enum Endian : u8 {
         Native  = 0,
@@ -126,7 +126,7 @@ namespace auto std::mem {
         Reads a unsigned value from the memory
         @param address The address to read from
         @param size The size of the value to read
-        @param [endian] The endianess of the value to read. Defaults to native
+        @param [endian] The endianness of the value to read. Defaults to native
         @return The value read
     */
     fn read_unsigned(u128 address, u8 size, Endian endian = Endian::Native) {
@@ -137,7 +137,7 @@ namespace auto std::mem {
         Reads a signed value from the memory
         @param address The address to read from
         @param size The size of the value to read
-        @param [endian] The endianess of the value to read. Defaults to native
+        @param [endian] The endianness of the value to read. Defaults to native
         @return The value read
     */
     fn read_signed(u128 address, u8 size, Endian endian = Endian::Native) {

includes/std/string.pat

@@ -4,13 +4,13 @@ import std.io;
 import std.mem;
 
 /*!
-    Libray to interact with strings.
+    Library to interact with strings.
 */
 
 namespace auto std::string {
 
     /**
-        Base type for sized strings. Represents a string with its size preceeding it.
+        Base type for sized strings. Represents a string with its size preceding it.
         @tparam SizeType The type of the size field.
         @tparam DataType The type of the characters.
     */

includes/std/sys.pat

@@ -50,7 +50,7 @@ namespace auto std {
     };
 
     /**
-        Throws an error notifying the developer that the current codepath is not implemented currently.
+        Throws an error notifying the developer that the current code path is not implemented currently.
     */
     fn unimplemented() {
         std::error("Unimplemented code path reached!");