Fix typos. (#2086)

Author: Yulv-git

doc/02_output.md

@@ -68,7 +68,7 @@ The output of the JSON files consist of a set of keypoints, whose ordering is re
 
 
 ## JSON Output Format
-There are 2 alternatives to save the OpenPose output. But both of them follow the keypoint ordering described in the the section [Keypoint Ordering in C++/Python](#body-keypoints-in-c-python) section (which you should read next).
+There are 2 alternatives to save the OpenPose output. But both of them follow the keypoint ordering described in the section [Keypoint Ordering in C++/Python](#body-keypoints-in-c-python) section (which you should read next).
 
 1. The `--write_json` flag saves the people pose data into JSON files. Each file represents a frame, it has a `people` array of objects, where each object has:
     1. `pose_keypoints_2d`: Body part locations (`x`, `y`) and detection confidence (`c`) formatted as `x0,y0,c0,x1,y1,c1,...`. The coordinates `x` and `y` can be normalized to the range [0,1], [-1,1], [0, source size], [0, output size], etc. (see the flag `--keypoint_scale` for more information), while the confidence score (`c`) in the range [0,1].

doc/advanced/heatmap_output.md

@@ -75,4 +75,4 @@ arrayData = x[1+int(round(x[0])):]
 
 
 ## Heatmap Scaling
-Note that `--net_resolution` sets the size of the network, thus also the size of the output heatmaps. This heatmaps are resized while keeping the aspect ratio. When aspect ratio of the the input and network are not the same, padding is added at the bottom and/or right part of the output heatmaps.
+Note that `--net_resolution` sets the size of the network, thus also the size of the output heatmaps. This heatmaps are resized while keeping the aspect ratio. When aspect ratio of the input and network are not the same, padding is added at the bottom and/or right part of the output heatmaps.

src/openpose/net/bodyPartConnectorBase.cpp

@@ -139,7 +139,7 @@ namespace op
                 roi.y -= marginY;
                 roi.width += 2*marginX;
                 roi.height += 2*marginY;
-                // partFirstNon0+1 for for loops
+                // partFirstNon0+1 for loops
                 partLastNon0++;
                 // From [p1, p2] to [p1, width, height]
                 // +1 to account for 1-line keypoints