Fix spelling (codespell)

Author: garydgregory

src/main/java/org/apache/commons/codec/binary/BaseNCodecInputStream.java

@@ -225,7 +225,7 @@ public int read(final byte[] array, final int offset, final int len) throws IOEx
          * Rationale for while-loop on (readLen == 0): ----- Base32.readResults() usually returns > 0 or EOF (-1). In the rare case where it returns 0, we just
          * keep trying.
          *
-         * This is essentially an undocumented contract for InputStream implementors that want their code to work properly with java.io.InputStreamReader, since
+         * This is essentially an undocumented contract for InputStream implementers that want their code to work properly with java.io.InputStreamReader, since
          * the latter hates it when InputStream.read(byte[]) returns a zero. Unfortunately our readResults() call must return 0 if a large amount of the data
          * being decoded was non-base32, so this while-loop enables proper interop with InputStreamReader for that scenario. ----- This is a fix for CODEC-101
          */

src/main/java/org/apache/commons/codec/digest/HmacUtils.java

@@ -48,7 +48,7 @@
  * byte[] key = {1,2,3,4}; // don't use this actual key!
  * String valueToDigest = "The quick brown fox jumps over the lazy dog";
  * byte[] hmac = new HmacUtils(HMAC_SHA_224, key).hmac(valueToDigest);
- * // Mac re-use
+ * // Mac reuse
  * HmacUtils hm1 = new HmacUtils("HmacAlgoName", key); // use a valid name here!
  * String hexPom = hm1.hmacHex(new File("pom.xml"));
  * String hexNot = hm1.hmacHex(new File("NOTICE.txt"));

src/main/java/org/apache/commons/codec/digest/PureJavaCrc32.java

@@ -593,7 +593,7 @@ public void reset() {
         resetCrc();
     }
 
-    // called by ctor, so must not be overrideable
+    // called by ctor, so must not be overridable
     private void resetCrc() {
         crc = 0xffffffff;
     }

src/test/java/org/apache/commons/codec/digest/Md5CryptTest.java

@@ -29,7 +29,7 @@
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.Timeout;
 
-@Timeout(3) // Try to avoid occaisional hang when testing
+@Timeout(3) // Try to avoid occasional hang when testing
 class Md5CryptTest {
 
     @Test