[MINOR][TYPO] fix fininsh typo

## What changes were proposed in this pull request?

fininsh => finish

## How was this patch tested?

N/A

Author: WeichenXu <WeichenXu123@outlook.com>

Closes #14238 from WeichenXu123/fix_fininsh_typo.

mllib/src/main/scala/org/apache/spark/ml/classification/LogisticRegression.scala

@@ -425,7 +425,7 @@ class LogisticRegression @Since("1.2.0") (
         }
 
         if (!state.actuallyConverged) {
-          logWarning("LogisticRegression training fininshed but the result " +
+          logWarning("LogisticRegression training finished but the result " +
             s"is not converged because: ${state.convergedReason.get.reason}")
         }
 

mllib/src/main/scala/org/apache/spark/ml/regression/AFTSurvivalRegression.scala

@@ -246,7 +246,7 @@ class AFTSurvivalRegression @Since("1.6.0") (@Since("1.6.0") override val uid: S
       }
 
       if (!state.actuallyConverged) {
-        logWarning("AFTSurvivalRegression training fininshed but the result " +
+        logWarning("AFTSurvivalRegression training finished but the result " +
           s"is not converged because: ${state.convergedReason.get.reason}")
       }
 

mllib/src/main/scala/org/apache/spark/ml/regression/LinearRegression.scala

@@ -326,7 +326,7 @@ class LinearRegression @Since("1.3.0") (@Since("1.3.0") override val uid: String
       }
 
       if (!state.actuallyConverged) {
-        logWarning("LinearRegression training fininshed but the result " +
+        logWarning("LinearRegression training finished but the result " +
           s"is not converged because: ${state.convergedReason.get.reason}")
       }
 

mllib/src/main/scala/org/apache/spark/mllib/optimization/LBFGS.scala

@@ -214,7 +214,7 @@ object LBFGS extends Logging {
     lossHistory += state.value
 
     if (!state.actuallyConverged) {
-      logWarning("LBFGS training fininshed but the result " +
+      logWarning("LBFGS training finished but the result " +
         s"is not converged because: ${state.convergedReason.get.reason}")
     }