Fix some typos [ci skip]

Author: kamipo

ext/psych/yaml/scanner.c

@@ -273,7 +273,7 @@
  * The tokens BLOCK-SEQUENCE-START and BLOCK-MAPPING-START denote indentation
  * increase that precedes a block collection (cf. the INDENT token in Python).
  * The token BLOCK-END denote indentation decrease that ends a block collection
- * (cf. the DEDENT token in Python).  However YAML has some syntax pecularities
+ * (cf. the DEDENT token in Python).  However YAML has some syntax peculiarities
  * that makes detections of these tokens more complex.
  *
  * The tokens BLOCK-ENTRY, KEY, and VALUE are used to represent the indicators
@@ -3287,7 +3287,7 @@ yaml_parser_scan_flow_scalar(yaml_parser_t *parser, yaml_token_t *token,
 
         /* Check if we are at the end of the scalar. */
 
-        /* Fix for crash unitialized value crash
+        /* Fix for crash uninitialized value crash
          * Credit for the bug and input is to OSS Fuzz
          * Credit for the fix to Alex Gaynor
          */

ext/psych/yaml/yaml.h

@@ -1095,7 +1095,7 @@ typedef struct yaml_parser_s {
     yaml_error_type_t error;
     /** Error description. */
     const char *problem;
-    /** The byte about which the problem occured. */
+    /** The byte about which the problem occurred. */
     size_t problem_offset;
     /** The problematic value (@c -1 is none). */
     int problem_value;
@@ -1335,7 +1335,7 @@ yaml_parser_delete(yaml_parser_t *parser);
  * Set a string input.
  *
  * Note that the @a input pointer must be valid while the @a parser object
- * exists.  The application is responsible for destroing @a input after
+ * exists.  The application is responsible for destroying @a input after
  * destroying the @a parser.
  *
  * @param[in,out]   parser  A parser object.
@@ -1950,7 +1950,7 @@ yaml_emitter_close(yaml_emitter_t *emitter);
 /**
  * Emit a YAML document.
  *
- * The documen object may be generated using the yaml_parser_load() function
+ * The document object may be generated using the yaml_parser_load() function
  * or the yaml_document_initialize() function.  The emitter takes the
  * responsibility for the document object and destroys its content after
  * it is emitted. The document object is destroyed even if the function fails.

lib/psych/handler.rb

@@ -119,7 +119,7 @@ def alias anchor
     # +tag+ is an associated tag or nil
     # +plain+ is a boolean value
     # +quoted+ is a boolean value
-    # +style+ is an integer idicating the string style
+    # +style+ is an integer indicating the string style
     #
     # See the constants in Psych::Nodes::Scalar for the possible values of
     # +style+

lib/psych/nodes/scalar.rb

@@ -50,7 +50,7 @@ class Scalar < Psych::Nodes::Node
       # +tag+ is an associated tag or nil
       # +plain+ is a boolean value
       # +quoted+ is a boolean value
-      # +style+ is an integer idicating the string style
+      # +style+ is an integer indicating the string style
       #
       # == See Also
       #