Address multiple github suggestions

Author: tszumski

docs/FFmpegPlugin.md

@@ -25,9 +25,9 @@ replace `7.0` with `6.1` in the following script.
    ```bash
    ./configure-ffmpeg.sh 
    ```
-   To be able to measure end-to-end please use following configuration parameters
+   To be able to measure end-to-end latency please use following configuration parameters
    ```bash
-   ./configure-ffmpeg.sh --enable-libfreetype --enable-libharfbuzz --enable-libfontconfig
+   ./configure-ffmpeg.sh ${FFMPEG_VER} --enable-libfreetype --enable-libharfbuzz --enable-libfontconfig
    ```
 
 1. Build and install FFmpeg with the Media Communications Mesh FFmpeg plugin
@@ -281,7 +281,7 @@ ffmpeg version n6.1.1-152-ge821e6c21d Copyright (c) 2000-2023 the FFmpeg develop
 
 While measuring latency, it is necessary to configure FFmpeg with additional parameters. If the error `No such filter: 'drawtext'` occurs, please reconfigure and rebuild FFmpeg:
    ```bash
-   ./configure-ffmpeg.sh --enable-libfreetype --enable-libharfbuzz --enable-libfontconfig
+   ./configure-ffmpeg.sh ${FFMPEG_VER} --enable-libfreetype --enable-libharfbuzz --enable-libfontconfig
    ```
 
 <!-- References -->

docs/LatencyMeasurement.md

@@ -8,7 +8,7 @@ Before reading this document, please read [FFmpeg Plugin](FFmpegPlugin.md) to fa
 
 1. Please follow build and install steps from [FFmpeg Plugin](FFmpegPlugin.md). with one exception, FFmpeg configuration tool requires additional parameters.
    ```bash
-   ./configure-ffmpeg.sh --enable-libfreetype --enable-libharfbuzz --enable-libfontconfig
+   ./configure-ffmpeg.sh ${FFMPEG_VER} --enable-libfreetype --enable-libharfbuzz --enable-libfontconfig
    ```
 ## Time synchronization between hosts
 
@@ -82,7 +82,7 @@ This example demonstrates sending a video file from the 1st FFmpeg instance to t
    ```bash
    ffmpeg -f rawvideo -pix_fmt yuv422p10le -s 1920x1080 -i <video-file-path> ...
    ```
-   To get meaningfull latency measurement it is also recommended to provide rate `-readrate` at which FFmpeg will read frames from file . Example:
+   To get meaningful latency measurement it is also recommended to provide rate `-readrate` at which FFmpeg will read frames from file. Example:
    ```bash
    ffmpeg -f rawvideo -readrate 2.4 -pix_fmt yuv422p10le -s 1920x1080 -i <video-file-path> ...
    ```
@@ -171,9 +171,12 @@ This example demonstrates sending a video file from the 1st FFmpeg instance to t
 ## Stream postprocessing
 The generated stream can be analyzed manually, but it is a long process. To accelerate it, there is a small sript written in Python that automatically extracts and plots latency.
 
-1. install reuired python packages
+1. install Install Tesseract OCR
    ```bash
       apt install tesseract-ocr
+   ```
+2. Install Python packages
+   ```bash
       pip install opencv-python
       pip install pytesseract
       pip install matplotlib