chore: fix typos across codebase

src/image/p5.Image.js

@@ -798,7 +798,7 @@ p5.Image = class {
    *   // Display the image.
    *   image(img, 17, 17);
    *
-   *   describe('A square with a horiztonal color gradient from black to white drawn on a gray background.');
+   *   describe('A square with a horizontal color gradient from black to white drawn on a gray background.');
    * }
    * </code>
    * </div>

src/image/pixels.js

@@ -1083,7 +1083,7 @@ p5.prototype.loadPixels = function(...args) {
  *   // Update the canvas.
  *   updatePixels();
  *
- *   describe('A horiztonal color gradient from black to white.');
+ *   describe('A horizontal color gradient from black to white.');
  * }
  * </code>
  * </div>

src/io/p5.Table.js

@@ -1196,7 +1196,7 @@ p5.Table = class {
  *
  * function preload() {
  *   // table is comma separated value "CSV"
- *   // and has specifiying header for column labels
+ *   // and has specifying header for column labels
  *   table = loadTable('assets/mammals.csv', 'csv', 'header');
  * }
  *
@@ -1303,7 +1303,7 @@ p5.Table = class {
  *
  * function preload() {
  *   // table is comma separated value "CSV"
- *   // and has specifiying header for column labels
+ *   // and has specifying header for column labels
  *   table = loadTable('assets/mammals.csv', 'csv', 'header');
  * }
  *

test/manual-test-examples/tutorials/DOM-extensions/6/sketch.js

@@ -35,7 +35,7 @@ function draw() {
   //drawEllipseCanvas();
 }
 
-// Addtional drawing functions.
+// Additional drawing functions.
 function drawEllipseCanvas() {
   background(120, 180, 200);
   ellipse(width / 2, height / 2, 100, 100);

test/manual-test-examples/tutorials/DOM-extensions/7/sketch.js

@@ -39,7 +39,7 @@ function draw() {
   drawRectCanvas();
 }
 
-// Addtional drawing functions.
+// Additional drawing functions.
 function drawEllipseCanvas() {
   background(120, 180, 200);
   ellipse(width / 2, height / 2, 100, 100);

test/unit/assets/books.xml

@@ -83,7 +83,7 @@
       <genre>Science Fiction</genre>
       <price>6.95</price>
       <publish_date>2000-11-02</publish_date>
-      <description>After an inadvertant trip through a Heisenberg
+      <description>After an inadvertent trip through a Heisenberg
       Uncertainty Device, James Salway discovers the problems
       of being quantum.</description>
    </book>
@@ -117,4 +117,4 @@
       integrated into a comprehensive development
       environment.</description>
    </book>
-</catalog>
+</catalog>

test/unit/core/error_helpers.js

@@ -237,7 +237,7 @@ suite('Error Helpers', function() {
 
   suite('validateParameters: argument tree', function() {
     // should not throw a validation error for the same kind of wrong args
-    // more than once. This prevents repetetive validation logs for a
+    // more than once. This prevents repetitive validation logs for a
     // function that is called in a loop or draw()
     testUnMinified(
       'no repeated validation error for the same wrong arguments',
@@ -440,7 +440,7 @@ suite('Error Helpers', function() {
       }
     );
 
-    testUnMinified('detects spelling + captialization mistakes', function() {
+    testUnMinified('detects spelling + capitalization mistakes', function() {
       const logMsg = help(new ReferenceError('RandomGossian is not defined'));
       assert.match(
         logMsg,
@@ -566,7 +566,7 @@ suite('Global Error Handling', function() {
     return iframe;
   };
 
-  testUnMinified('identifies errors happenning internally', function() {
+  testUnMinified('identifies errors happening internally', function() {
     return new Promise(function(resolve) {
       // quite an unusual way to test, but the error listener doesn't work
       // under mocha. Also the stacktrace gets filled with mocha internal
@@ -590,7 +590,7 @@ suite('Global Error Handling', function() {
   });
 
   testUnMinified(
-    'identifies errors happenning internally in ES6 classes',
+    'identifies errors happening internally in ES6 classes',
     function() {
       return new Promise(function(resolve) {
         prepSyntaxTest(