Fix typos found by codespell

Most of them are in comments, some in strings.

Signed-off-by: Stefan Weil <sw@weilnetz.de>

tasks/generate-exports.js

@@ -72,7 +72,7 @@ function getSymbols(patterns, callback) {
 /**
  * Generate a list of symbol names given a list of patterns.  Patterns may
  * include a * wildcard at the end of the string, in which case all symbol names
- * that start with the preceeding string will be matched (e.g 'foo.Bar#*' will
+ * that start with the preceding string will be matched (e.g 'foo.Bar#*' will
  * match all symbol names that start with 'foo.Bar#').
  *
  * @param {Array.<string>} patterns A list of symbol names to match.  Wildcards