Fix some typos.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43709 91177308-0d34-0410-b5e6-96231b3b80d8

docs/tutorial/LangImpl1.html

@@ -66,7 +66,7 @@ fib(40)
 </pre>
 </div>
 
-<p>We also allow Kaleidoscope to call into standard library functions (this LLVM
+<p>We also allow Kaleidoscope to call into standard library functions (the LLVM
 JIT makes this completely trivial).  This means that you can use the 'extern'
 keyword to define a function before you use it (this is also useful for mutually
 recursive functions).  For example:</p>
@@ -90,7 +90,7 @@ eventually add side effects for those who prefer them.</p>
 <p>In order to make this tutorial
 maximally understandable and hackable, we choose to implement everything in C++
 instead of using lexer and parser generators.  LLVM obviously works just fine
-with these tools, and choice of these tools doesn't impact overall design.</p>
+with such tools, and making use of them doesn't impact the overall design.</p>
 
 <p>A note about this tutorial: we expect you to extend the language and play
 with it on your own.  Take the code and go crazy hacking away at it.  It can be
@@ -203,7 +203,7 @@ handle them here inline.  Numeric values are similar:</p>
 <p>This is all pretty straight-forward code for processing input.  When reading
 a numeric value from input, we use the C <tt>strtod</tt> function to convert it
 to a numeric value that we store in <tt>NumVal</tt>.  Note that this isn't doing
-sufficient error checking: it will incorrect read "1.23.45.67" and handle it as
+sufficient error checking: it will incorrectly read "1.23.45.67" and handle it as
 if you typed in "1.23".  Feel free to extend it :).  Next we handle comments:
 </p>
 
@@ -220,9 +220,9 @@ if you typed in "1.23".  Feel free to extend it :).  Next we handle comments:
 </pre>
 </div>
 
-<p>We handle comments by skipping to the end of the line and then returnning the
+<p>We handle comments by skipping to the end of the line and then returning the
 next comment.  Finally, if the input doesn't match one of the above cases, it is
-either an operator character like '+', the end of file.  These are handled with
+either an operator character like '+' or the end of the file.  These are handled with
 this code:</p>
 
 <div class="doc_code">

docs/tutorial/LangImpl2.html

@@ -212,7 +212,7 @@ FunctionAST *ErrorF(const char *Str) { Error(Str); return 0; }
 <p>
 The <tt>Error</tt> routines are simple helper routines that our parser will use
 to handle errors.  The error recovery in our parser will not be the best and
-are not particular user-friendly, but it will be enough for our tutorial.  These
+is not particular user-friendly, but it will be enough for our tutorial.  These
 routines make it easier to handle errors in routines that have various return
 types: they always return null.</p>
 
@@ -284,7 +284,7 @@ return null on an error.</p>
 calling <tt>ParseExpression</tt> (we will soon see that <tt>ParseExpression</tt> can call
 <tt>ParseParenExpr</tt>).  This is powerful because it allows us to handle 
 recursive grammars, and keeps each production very simple.  Note that
-parenthesis do not cause construction of AST nodes themselves.  While we could
+parentheses do not cause construction of AST nodes themselves.  While we could
 do this, the most important role of parens are to guide the parser and provide
 grouping.  Once the parser constructs the AST, parens are not needed.</p>
 
@@ -432,7 +432,7 @@ the expression "a+b+(c+d)*e*f+g".  Operator precedence parsing considers this
 as a stream of primary expressions separated by binary operators.  As such,
 it will first parse the leading primary expression "a", then it will see the
 pairs [+, b] [+, (c+d)] [*, e] [*, f] and [+, g].  Note that because parentheses
-are primary expressions that the binary expression parser doesn't need to worry
+are primary expressions, the binary expression parser doesn't need to worry
 about nested subexpressions like (c+d) at all. 
 </p>
 
@@ -631,7 +631,7 @@ static PrototypeAST *ParsePrototype() {
 </div>
 
 <p>Given this, a function definition is very simple, just a prototype plus
-and expression to implement the body:</p>
+an expression to implement the body:</p>
 
 <div class="doc_code">
 <pre>