fix documentation and reverse accidental submodule updation

Author: parzival1821

service_contracts/src/Errors.sol

@@ -202,7 +202,7 @@ library Errors {
     error RailNotAssociated(uint256 railId);
 
     /// @notice The epoch range is invalid
-    /// @notice Will be emitted if any of the following conditions is NOT met :
+    /// @notice Will be emitted if any of the following conditions is NOT met:
     /// @notice 1. fromEpoch must be less than toEpoch
     /// @notice 2. toEpoch must be less than block number
     /// @notice 3. toEpoch must be greater than the activation epoch

service_contracts/src/FilecoinWarmStorageService.sol

@@ -1497,14 +1497,14 @@ contract FilecoinWarmStorageService is
         uint256 startingPeriodDeadline = _calcPeriodDeadline(dataSetId, startingPeriod);
 
         if (toEpoch < startingPeriodDeadline) {
-            // alternative way to check the same : `startingPeriod == endingPeriod`
+            // alternative way to check the same: `startingPeriod == endingPeriod`
             if (_isPeriodProven(dataSetId, startingPeriod, currentPeriod)) {
-                provenEpochCount = (toEpoch - fromEpoch); // epochs : (`from + 1` -> `to`)  (both inclusive)
+                provenEpochCount = (toEpoch - fromEpoch); // epochs: (`from + 1` -> `to`)  (both inclusive)
                 lastProvenEpoch = toEpoch;
             }
         } else {
             if (_isPeriodProven(dataSetId, startingPeriod, currentPeriod)) {
-                provenEpochCount += (startingPeriodDeadline - fromEpoch); // epochs : (`from + 1` -> `deadline`)
+                provenEpochCount += (startingPeriodDeadline - fromEpoch); // epochs: (`from + 1` -> `deadline`)
             }
 
             // now loop through the proving periods between endingPeriod and startingPeriod.
@@ -1517,7 +1517,7 @@ contract FilecoinWarmStorageService is
 
             // now handle the last period separately
             if (_isPeriodProven(dataSetId, endingPeriod, currentPeriod)) {
-                // then the epochs to add = `endingPeriodStarting` to `toEpoch`. But since `endingPeriodStarting` is simply the ending of its previous period + 1, so  epochs : (`deadline + 1` -> `to`)
+                // then the epochs to add = `endingPeriodStarting` to `toEpoch`. But since `endingPeriodStarting` is simply the ending of its previous period + 1, so epochs: (`deadline + 1` -> `to`)
                 provenEpochCount += (toEpoch - _calcPeriodDeadline(dataSetId, endingPeriod - 1));
                 lastProvenEpoch = toEpoch;
             }