Fix typos (#324)

.github/CONTRIBUTING.md

@@ -34,7 +34,7 @@ Here are some of the expectations we have of contributors:
 
 - **Benchmarks should be included for optimizations.** Optimizations sometimes make code harder to read or have changes that are less than obvious. They should be proven with benchmarks or profiling.
 
-- **[Squash](http://gitready.com/advanced/2009/02/10/squashing-commits-with-rebase.html) insignificant commits.** Every commit should be significant. Commits which merely rewrite a comment or fix a typo can be combined into another commit that has more substance. Interactive rebase can do this, or a simpler way is `git reset --soft <diverging-commit>` then `git commit -s`.
+- **[Squash](https://gitready.com/advanced/2009/02/10/squashing-commits-with-rebase.html) insignificant commits.** Every commit should be significant. Commits which merely rewrite a comment or fix a typo can be combined into another commit that has more substance. Interactive rebase can do this, or a simpler way is `git reset --soft <diverging-commit>` then `git commit -s`.
 
 - **Maintain your contributions.** Please help maintain your change after it is merged.
 
@@ -73,7 +73,7 @@ Please follow the issue template so we have all the needed information. Unredact
 
 Failure to fill out the issue template will probably result in the issue being closed.
 
-We suggest reading [How to Report Bugs Effectively](http://www.chiark.greenend.org.uk/~sgtatham/bugs.html).
+We suggest reading [How to Report Bugs Effectively](https://www.chiark.greenend.org.uk/~sgtatham/bugs.html).
 
 Please be kind. :smile: Remember that CertMagic comes at no cost to you, and you're getting free support when we fix your issues. If we helped you, please consider helping someone else!
 

acmeissuer.go

@@ -282,7 +282,7 @@ func NewACMEIssuer(cfg *Config, template ACMEIssuer) *ACMEIssuer {
 }
 
 // IssuerKey returns the unique issuer key for the
-// confgured CA endpoint.
+// configured CA endpoint.
 func (am *ACMEIssuer) IssuerKey() string {
 	return am.issuerKey(am.CA)
 }

certificates.go

@@ -108,7 +108,7 @@ func (cfg *Config) certNeedsRenewal(leaf *x509.Certificate, ari acme.RenewalInfo
 		// (notice that we don't strictly require an ARI window to also exist; we presume
 		// that if a time has been selected, a window does or did exist, even if it didn't
 		// get stored/encoded for some reason - but also: this allows administrators to
-		// manually or explicitly schedule a renewal time indepedently of ARI which could
+		// manually or explicitly schedule a renewal time independently of ARI which could
 		// be useful)
 		selectedTime := ari.SelectedTime
 
@@ -145,7 +145,7 @@ func (cfg *Config) certNeedsRenewal(leaf *x509.Certificate, ari acme.RenewalInfo
 			// possibility of a bug in ARI compromising a site's uptime: we should always always
 			// always give heed to actual validity period
 			if currentlyInRenewalWindow(leaf.NotBefore, expiration, 1.0/20.0) {
-				logger.Warn("certificate is in emergency renewal window; superceding ARI",
+				logger.Warn("certificate is in emergency renewal window; superseding ARI",
 					zap.Duration("remaining", time.Until(expiration)),
 					zap.Time("renewal_cutoff", cutoff))
 				return true

certmagic.go

@@ -28,7 +28,7 @@
 // you use this lower-level API, you'll have to be sure to solve the HTTP
 // and TLS-ALPN challenges yourself (unless you disabled them or use the
 // DNS challenge) by using the provided Config.GetCertificate function
-// in your tls.Config and/or Config.HTTPChallangeHandler in your HTTP
+// in your tls.Config and/or Config.HTTPChallengeHandler in your HTTP
 // handler.
 //
 // See the package's README for more instruction.
@@ -261,7 +261,7 @@ func ManageAsync(ctx context.Context, domainNames []string) error {
 // containing the names passed into those functions if
 // no DecisionFunc is set. This ensures some degree of
 // control by default to avoid certificate operations for
-// aribtrary domain names. To override this whitelist,
+// arbitrary domain names. To override this whitelist,
 // manually specify a DecisionFunc. To impose rate limits,
 // specify your own DecisionFunc.
 type OnDemandConfig struct {

dnsutil_test.go

@@ -193,7 +193,7 @@ func TestResolveConfServers(t *testing.T) {
 			expected: []string{"10.200.3.249", "10.200.3.250:5353", "2001:4860:4860::8844", "[10.0.0.1]:5353"},
 		},
 		{
-			fixture:  "testdata/resolv.conf.nonexistant",
+			fixture:  "testdata/resolv.conf.nonexistent",
 			defaults: []string{"127.0.0.1:53"},
 			expected: []string{"127.0.0.1:53"},
 		},

handshake.go

@@ -958,6 +958,6 @@ type helloInfoCtxKey string
 // a context.Context within a DecisionFunc. However, be advised that it is best practice
 // that the decision whether to obtain a certificate is be based solely on the name,
 // not other properties of the specific connection/client requesting the connection.
-// For example, it is not adviseable to use a client's IP address to decide whether to
+// For example, it is not advisable to use a client's IP address to decide whether to
 // allow a certificate. Instead, the ClientHello can be useful for logging, etc.
 const ClientHelloInfoCtxKey helloInfoCtxKey = "certmagic:ClientHelloInfo"