[DOC] Correct a couple of typos in comments by @dvsuresh [Fixes GH-482]

* doc/ChangeLog-YARV:  Correct a typo in comment
* lib/rubygems/specification.rb:  ditto.
* test/rexml/data/tutorial.xml:  ditto.
* test/ruby/test_settracefunc.rb:  ditto.
* tool/instruction.rb:  ditto.

https://github.com/ruby/ruby/pull/482
[ci-skip]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44208 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

doc/ChangeLog-YARV

@@ -4328,7 +4328,7 @@ Sun Dec 31 17:42:05 2006  Koichi Sasada  <ko1@atdot.net>
 
 	* vm.c : fix to skip pushing value at "next"
 
-	* yarvcore.h : move definision of 
+	* yarvcore.h : move definition of 
 	"struct iseq_compile_data_ensure_node_stack" to compile.c
 
 	* compile.c : fix ensure catch table creation

lib/rubygems/specification.rb

@@ -1609,7 +1609,7 @@ class Gem::Specification < Gem::BasicSpecification
 
   ##
   # Returns the full path to this spec's documentation directory.  If +type+
-  # is given it will be appended to the end.  For examlpe:
+  # is given it will be appended to the end.  For example:
   #
   #   spec.doc_dir      # => "/path/to/gem_repo/doc/a-1"
   #

test/rexml/data/tutorial.xml

@@ -628,7 +628,7 @@ parser.parse</example>
         attributes, text) root_node.find_first_recursive {|node| node.name ==
         tag and attributes.all? {|attr, val| node.attributes[attr] == val} and
         text === node.text } end # # Extract specific columns (specified by
-        the position of it's corrensponding # header column) from a table. # #
+        the position of it's corresponding # header column) from a table. # #
         Given the following table: # # &lt;table&gt; # &lt;tr&gt; #
         &lt;td&gt;A&lt;/td&gt; # &lt;td&gt;B&lt;/td&gt; #
         &lt;td&gt;C&lt;/td&gt; # &lt;/tr&gt; # &lt;tr&gt; #

test/ruby/test_settracefunc.rb

@@ -607,7 +607,7 @@ class TestSetTraceFunc < Test::Unit::TestCase
     tap{}
     trace.disable
 
-    # passed tp is unique, `trace' object which is genereted by TracePoint.trace
+    # passed tp is unique, `trace' object which is generated by TracePoint.trace
     tps.each{|tp|
       assert_equal trace, tp
     }

tool/instruction.rb

@@ -64,7 +64,7 @@ class RubyVM
     def sp_increase_c_expr
       if(pops.any?{|t, v| v == '...'} ||
          rets.any?{|t, v| v == '...'})
-        # user definision
+        # user definition
         raise "no sp increase definition" if @sp_inc.nil?
         ret = "int inc = 0;\n"