fix typos and add new line to file

README.md

@@ -319,7 +319,7 @@ the dcrdata workload.
 Read [postgresql-tuning.conf](./db/dcrpg/postgresql-tuning.conf) carefully for
 details on how to make the necessary changes to your system. A helpful online
 tool for determining good settings for your system is called
-[PGTune](https://pgtune.leopard.in.ua/). Note that when using this tool to
+[PGTune](https://pgtune.leopard.in.ua/). Note that when using this tool,
 subtract 1.5-2GB from your system RAM so dcrdata itself will have plenty of
 memory. **DO NOT** simply use this file in place of your existing
 postgresql.conf. **DO NOT** simply copy and paste these settings into the

api/types/apicache.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2018-2021, The Decred developers
+// Copyright (c) 2018-2022, The Decred developers
 // Copyright (c) 2017, Jonathan Chappelow
 // See LICENSE for details.
 
@@ -602,7 +602,7 @@ func (pq *BlockPriorityQueue) Pop() interface{} {
 // ResetHeap creates a fresh queue given the input []*CachedBlock. For every
 // CachedBlock in the queue, ResetHeap resets the access count and time, and
 // heap index. The min/max heights are reset, the heap is heapifies. NOTE: the
-// input slice is modifed, but not reordered. A fresh slice is created for PQ
+// input slice is modified, but not reordered. A fresh slice is created for PQ
 // internal use.
 func (pq *BlockPriorityQueue) ResetHeap(bh []*CachedBlock) {
 	pq.mtx.Lock()
@@ -662,7 +662,7 @@ func (pq *BlockPriorityQueue) Insert(summary *BlockDataBasic, stakeInfo *StakeIn
 
 		// If new block not lower priority than next to pop, replace that in the
 		// queue and fix up the heap. Usually you don't replace if equal, but
-		// new one is necessariy more recently accessed, so we replace.
+		// new one is necessarily more recently accessed, so we replace.
 		if pq.lessFn(pq.bh[0], cachedBlock) {
 			removedBlockHashStr := pq.bh[0].hash
 			removedBlockHash, _ := chainhash.NewHashFromStr(removedBlockHashStr)
@@ -833,8 +833,8 @@ func (pq *BlockPriorityQueue) RemoveIndex(idx int) {
 	pq.RescanMinMaxForRemove(removedHeight)
 }
 
-// RescanMinMax rescans the enitire heap to get the current min/max heights.
-// This function is NOT thread-safe.
+// RescanMinMax rescans the entire heap to get the current min/max heights. This
+// function is NOT thread-safe.
 func (pq *BlockPriorityQueue) RescanMinMax() {
 	for i := range pq.bh {
 		pq.updateMinMax(pq.bh[i].height)

dev/dcrdata-harness.tmux

@@ -321,4 +321,4 @@ echo Attach to simnet nodes/wallets with \"tmux a -t $TMUX_SESSION\".
 
 
 # TODO: the harness currently creates coinbases, tickets, votes and regular
-# transactions. It'll need to generate revocations and swap transactions as well.
+# transactions. It'll need to generate revocations and swap transactions as well.

docs/CONTRIBUTING.md

@@ -27,7 +27,7 @@ examples of valid PR/Issues naming formats:
 - net/url: Parsing 192.168.12.12:8080 returns an error (Issue)
 - views/home: data-type of size column needs to be "size" (PR)
 - db/dcrpg: Charts data updates could use incremental changes. (Issue)
-- doc/contributing.md: Updating the users contribution guidilines. (PR)
+- doc/contributing.md: Updating the users contribution guidelines. (PR)
 
 ### When to Search the Issue Tracker
 
@@ -128,7 +128,7 @@ In the text editor, change the command from `pick` to `fixup` or `squash` for **
 commit message for everything, change the command from `pick` to `reword` on the top commit.
 It should look something like this before saving.
 
-![alt text](https://i.imgur.com/fOtaYtb.png "Rebase commmit command guide")
+![alt text](https://i.imgur.com/fOtaYtb.png "Rebase commit command guide")
 
 7. **If you have conflicts**, resolve them by iterating through the diffs one conflicting commit at a time.
 
@@ -182,7 +182,7 @@ For example, if you have made 3 commits since your last push, then run the follo
 git rebase -i HEAD~3
 ```
 
-The number after the tilda (~) is the number of commits that you want to combine, including the one you did at the beginning of this step. Try not to squash post-review commits with pre-review commits. Leaving them separate makes navigating the changes easier.
+The number after the tilde (~) is the number of commits that you want to combine, including the one you did at the beginning of this step. Try not to squash post-review commits with pre-review commits. Leaving them separate makes navigating the changes easier.
 
 ###### b)
 

exchanges/rateserver/log.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2019 The Decred developers
+// Copyright (c) 2022 The Decred developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -30,7 +30,7 @@ func (logWriter) Write(p []byte) (n int, err error) {
 	return logRotator.Write(p)
 }
 
-// initializeLogging initializes the logging rotater to write logs to logFile
+// initializeLogging initializes the logging rotator to write logs to logFile
 // and create roll files in the same directory.  It must be called before the
 // package-global log rotater variables are used.
 func initializeLogging(logFile, logLevel string) {